CN117083470A

CN117083470A - Disk brake and bracket

Info

Publication number: CN117083470A
Application number: CN202180096207.1A
Authority: CN
Inventors: 宇野美由纪; 铃木伸二
Original assignee: Hitachi Astemo Ltd
Current assignee: Hitachi Astemo Ltd
Priority date: 2021-04-13
Filing date: 2021-12-21
Publication date: 2023-11-17
Also published as: US20240159281A1; JPWO2022219849A1; EP4325078A1; WO2022219849A1

Abstract

A disc brake (10) is provided with: friction pads (24, 25) provided at a lateral position in the disk axial direction with respect to the disk rotor (11) and provided so as to be movable in the disk axial direction; a bracket (21) provided with: an inner peripheral surface (21 b) that supports the friction pads (24, 25) and is formed along the outer peripheral edge of the disc rotor (11); and filter parts (55, 56) located on the inner peripheral surface (21 b) and disposed facing the outer peripheral edge of the disc rotor (11).

Description

Disk brake and bracket

Technical Field

The present application relates to a disc brake and a bracket. The present application claims priority based on japanese patent application No. 2021-067812, 4-13 of 2021, the contents of which are incorporated herein by reference.

Background

The disc brake includes a disc brake in which another brake dust collector is provided beside a brake caliper (for example, refer to patent document 1).

Prior art literature

Patent literature

Patent document 1: U.S. patent application publication 2020/0271176

Disclosure of Invention

Problems to be solved by the application

It is desirable to efficiently recover brake dust.

The application aims to provide a disc brake and a bracket capable of efficiently recovering brake dust.

Technical scheme for solving problems

In order to achieve the above object, one aspect of the present invention provides a disc brake comprising: a friction pad provided at a lateral position in the disk axial direction with respect to the disk rotor, and provided so as to be movable in the disk axial direction; a bracket, which has: an inner peripheral surface supporting the friction pad and formed along an outer peripheral edge of the disc rotor; and a filter unit located on the inner peripheral surface and facing the outer peripheral edge of the disc rotor.

One embodiment of the bracket of the present invention includes: an inner peripheral surface supporting the friction pad and formed along an outer peripheral edge of the disc rotor; and a filter unit located on the inner peripheral surface and facing the outer peripheral edge of the disc rotor.

Effects of the invention

According to the present invention, brake dust can be efficiently recovered.

Drawings

Fig. 1 is a front view showing a disc brake according to a first embodiment.

Fig. 2 is a perspective view showing a disc brake according to the first embodiment.

Fig. 3 is a view showing the disc brake according to the first embodiment as seen from the inner side in the disc radial direction.

Fig. 4 is a side view showing the disc brake of the first embodiment.

Fig. 5 is a V-V sectional view of fig. 4 showing a disc brake of the first embodiment.

Fig. 6 is a V-V sectional view of fig. 4 showing a disc brake of the first embodiment with a disc removed.

Fig. 7 is a perspective view showing a bracket of the disc brake of the first embodiment.

Fig. 8 is a view showing a bracket of the disc brake of the first embodiment as seen from the inner side in the disc radial direction.

Fig. 9 is a V-V sectional view of fig. 4 showing a bracket of a disc brake of the first embodiment.

Fig. 10 is a front view showing a bracket main body of the disc brake of the first embodiment.

Fig. 11 is a perspective view showing a bracket main body of the disc brake according to the first embodiment.

Fig. 12 is a perspective view showing a bracket main body of the disc brake according to the first embodiment.

Fig. 13 is a side view showing a bracket main body of the disc brake of the first embodiment.

Fig. 14 is a sectional view of XIV-XIV in fig. 13 showing a bracket main body of a disc brake of the first embodiment.

Fig. 15 is an XV-XV cross-sectional view in fig. 13 showing the bracket body of the disc brake in the first embodiment.

Fig. 16 is a perspective view showing a dust collecting portion of the disc brake according to the first embodiment.

Fig. 17 is a perspective view showing a dust collecting portion of the disc brake according to the first embodiment.

Fig. 18 is a perspective view showing a dust collecting portion of the disc brake according to the first embodiment.

Fig. 19 is a perspective view showing a positioning plate portion of the disc brake according to the first embodiment.

Fig. 20 is a perspective view showing a positioning plate portion of the disc brake according to the first embodiment.

Fig. 21 is a perspective view showing a positioning plate portion of the disc brake according to the first embodiment.

Fig. 22 is a perspective view showing a clip plate portion of the disc brake according to the first embodiment.

Fig. 23 is a perspective view showing a clip plate portion of the disc brake according to the first embodiment.

Fig. 24 is a partial cross-sectional view showing a state of attachment of the positioning plate portion of the disc brake according to the first embodiment.

Fig. 25 is a partial cross-sectional view showing a state of attachment of the clip plate portion of the disc brake of the first embodiment.

Fig. 26 is a perspective view showing a first modification of the positioning plate portion of the disc brake according to the first embodiment.

Fig. 27 is a perspective view showing a first modification of the positioning plate portion of the disc brake according to the first embodiment.

Fig. 28 is a perspective view showing a first modification of the positioning plate portion of the disc brake according to the first embodiment.

Fig. 29 is a perspective view showing a first modification of the clip plate portion of the disc brake according to the first embodiment.

Fig. 30 is a perspective view showing a first modification of the clip plate portion of the disc brake according to the first embodiment.

Fig. 31 is a perspective view showing a second modification of the positioning plate portion of the disc brake according to the first embodiment.

Fig. 32 is a perspective view showing a second modification of the positioning plate portion of the disc brake according to the first embodiment.

Fig. 33 is a perspective view showing a second modification of the positioning plate portion of the disc brake according to the first embodiment.

Fig. 34 is a perspective view showing a second modification of the clip plate portion of the disc brake according to the first embodiment.

Fig. 35 is a perspective view showing a second modification of the clip plate portion of the disc brake according to the first embodiment.

Fig. 36 is a front view showing a disc brake according to the second embodiment.

Fig. 37 is a perspective view showing a disc brake according to the second embodiment.

Fig. 38 is a view showing a disc brake according to the second embodiment as seen from the inner side in the disc radial direction.

Fig. 39 is a side view showing a disc brake of the second embodiment.

Fig. 40 is a sectional view taken along line XL-XL of fig. 39 showing a disc brake according to a second embodiment.

FIG. 41 is a sectional view of XL-XL of FIG. 39 showing a disc brake of a second embodiment with a disc removed.

Fig. 42 is a perspective view showing a bracket of a disc brake according to the second embodiment.

Fig. 43 is a view showing a bracket of the disc brake of the second embodiment as seen from the inner side in the disc radial direction.

Fig. 44 is a sectional view taken along line XL-XL of fig. 39 showing a bracket of a disc brake of a second embodiment.

Fig. 45 is a perspective view showing a bracket of a disc brake according to the second embodiment.

Fig. 46 is a front view showing a bracket main body of a disc brake according to a second embodiment.

Fig. 47 is a perspective view showing a bracket main body of a disc brake according to a second embodiment.

Fig. 48 is a side view showing a bracket main body of the disc brake of the second embodiment.

Fig. 49 is a cross-sectional view taken along line XLIX-XLIX in fig. 48 showing a bracket main body of a disc brake according to the second embodiment.

Fig. 50 is an L-L sectional view in fig. 48 showing a bracket main body of a disc brake according to a second embodiment.

Fig. 51 is a perspective view showing a dust collecting portion of the disc brake according to the second embodiment.

Fig. 52 is a perspective view showing a dust collecting portion of the disc brake according to the second embodiment.

Fig. 53 is a perspective view showing a dust collecting portion of the disc brake according to the second embodiment.

Fig. 54 is a perspective view showing a positioning plate portion of the disc brake according to the second embodiment.

Fig. 55 is a perspective view showing a positioning plate portion of the disc brake according to the second embodiment.

Fig. 56 is a perspective view showing a positioning plate portion of the disc brake according to the second embodiment.

Fig. 57 is a LVII-LVII sectional view of fig. 36 showing a bracket of a disc brake of a second embodiment.

Fig. 58 is a cross-sectional view of the LVIII-LVIII of fig. 36 of the disc brake of the second embodiment.

Fig. 59 is a perspective view showing a first modification of the positioning plate portion of the disc brake according to the second embodiment.

Fig. 60 is a perspective view showing a first modification of the positioning plate portion of the disc brake according to the second embodiment.

Fig. 61 is a perspective view showing a first modification of the positioning plate portion of the disc brake according to the second embodiment.

Fig. 62 is a perspective view showing a second modification of the positioning plate portion of the disc brake according to the second embodiment.

Fig. 63 is a perspective view showing a second modification of the positioning plate portion of the disc brake according to the second embodiment.

Fig. 64 is a perspective view showing a second modification of the positioning plate portion of the disc brake according to the second embodiment.

Fig. 65 is a front view showing a disc brake according to a third embodiment.

Fig. 66 is a perspective view showing a disc brake according to a third embodiment.

Fig. 67 is a view showing a disc brake according to a third embodiment as seen from the inner side in the disc radial direction.

Fig. 68 is a side view showing a disc brake of the third embodiment.

Fig. 69 is a cross-sectional view of LXIX-LXIX of fig. 68 showing a disc brake according to a third embodiment.

Fig. 70 is a cross-sectional view of LXIX-LXIX of fig. 68 showing a disc brake according to a third embodiment with a disc removed.

Fig. 71 is a perspective view showing a bracket of a disc brake according to a third embodiment.

Fig. 72 is a view showing a bracket of the disc brake of the third embodiment as seen from the inner side in the disc radial direction.

Fig. 73 is a cross-sectional view of LXIX-LXIX of fig. 68 showing a bracket of a disc brake according to a third embodiment.

Fig. 74 is a perspective view showing a bracket of a disc brake according to the third embodiment.

Fig. 75 is a front view showing a bracket of a disc brake according to the third embodiment.

Fig. 76 is a perspective view showing a dust collecting portion of the disc brake according to the third embodiment.

Fig. 77 is a perspective view showing a dust collecting portion of the disc brake according to the third embodiment.

Fig. 78 is a perspective view showing a dust collecting portion of the disc brake according to the third embodiment.

Fig. 79 is a perspective view showing a positioning plate portion of the disc brake according to the third embodiment.

Fig. 80 is a perspective view showing a positioning plate portion of the disc brake according to the third embodiment.

Fig. 81 is a perspective view showing a first modification of the positioning plate portion of the disc brake according to the third embodiment.

Fig. 82 is a perspective view showing a first modification of the positioning plate portion of the disc brake according to the third embodiment.

Fig. 83 is a perspective view showing a second modification of the positioning plate portion of the disc brake according to the third embodiment.

Fig. 84 is a perspective view showing a second modification of the positioning plate portion of the disc brake according to the third embodiment.

Detailed Description

First embodiment

The first embodiment will be described below with reference to fig. 1 to 35. The disc brake 10 of the first embodiment is used for a vehicle such as an automobile, and is used for applying braking force to the vehicle, specifically, for front wheel braking of a four-wheel automobile. As shown in fig. 1 to 5, the disc brake 10 stops rotation of a disc-shaped disc rotor 11 that rotates together with a wheel, not shown, to brake the vehicle. Hereinafter, a state in which the disc brake 10 is mounted on the vehicle will be described.

In the following description, the extending direction of the center axis of the disc rotor 11 is referred to as a disc axial direction, the radial direction of the disc rotor 11 is referred to as a disc radial direction, and the circumferential direction of the disc rotor 11, that is, the rotational direction is referred to as a disc circumferential direction. The center axis side of the disc rotor 11 in the disc radial direction is referred to as the disc radial direction inner side, and the opposite side to the center axis of the disc rotor 11 in the disc radial direction is referred to as the disc radial direction outer side. The outer side of the vehicle in the disk axial direction is referred to as the disk axial outer side, and the inner side of the vehicle in the disk axial direction is referred to as the disk axial inner side. The inlet side in the rotation direction R of the disc rotor 11 when the vehicle is advancing is referred to as a disc transfer side, and the outlet side in the rotation direction R of the disc rotor 11 when the vehicle is advancing is referred to as a disc transfer side.

As shown in fig. 1 to 6, the disc brake 10 includes a bracket 21 and a caliper 22. The disc brake 10 includes a pair of protection covers 23 shown in fig. 2 and 3, a pair of friction pads 24 and 25 shown in fig. 6 and 1, and a pair of pad springs 26 and 27. The friction pad 24 shown in fig. 6 is disposed on the inner side in the disk axial direction with respect to the disk rotor 11, and the friction pad 25 shown in fig. 1 is disposed on the outer side in the disk axial direction with respect to the disk rotor 11. The packing spring 26 is disposed on the disk rotation side of the tray 21. The packing spring 27 is disposed on the disk rotation-out side of the tray 21.

As shown in fig. 7 to 9, the bracket 21 includes a bracket main body 29 and a pair of filter portions 55 and 56.

The bracket main body 29 is a metal integrally molded product, and has a shape shown in fig. 10 to 15. The tray main body 29 is long in the disk circumferential direction. The bracket main body 29 has: the fixing portion 30 shown in fig. 10 to 14, the pair of inner pad supporting portions 31 and 32 shown in fig. 12 and 14, and the pair of outer frame portions 33 and 34 shown in fig. 10 to 12, 14 and 15. The bracket main body 29 further includes: as shown in fig. 10 to 12 and 15, a pair of outer pad support portions 35 and 36, and a tie beam portion 37. The carrier body 29 has a mirror-symmetrical shape with respect to the center in the disk circumferential direction.

As shown in fig. 3 and 4, the fixing portion 30 is disposed on one side in the disk axial direction with respect to the disk rotor 11, and is fixed to a non-rotating portion of the vehicle, which is not shown. Here, the non-rotating portion of the vehicle to which the bracket main body 29 is attached is disposed inside the disc rotor 11 in the disc axial direction, and the fixed portion 30 attached to the non-rotating portion is also disposed inside the disc rotor 11 in the disc axial direction. As shown in fig. 6, the fixing portion 30 is arranged to extend in the disk circumferential direction. The fixing portion 30 is provided with a pair of mounting boss portions 42 at both ends in the disk circumferential direction, and the pair of mounting boss portions 42 have mounting holes 41 penetrating in the disk axial direction. The fixed portion 30 is mounted on a non-rotating portion of the vehicle at a pair of mounting boss portions 42.

As shown in fig. 9, each of the pair of inner pad support portions 31 and 32 has a plate shape extending perpendicularly to the disk axial direction. The inner pad support portion 31 on the disk transfer side extends radially outward from the end of the fixing portion 30 on the disk transfer side, and on the disk transfer side. The inner liner support portion 32 on the disk ejection side extends from the end portion on the disk ejection side of the fixing portion 30 to the outer side in the disk radial direction and on the disk ejection side. The pair of inner pad supporting portions 31 and 32 are disposed on the inner side in the disk axial direction with respect to the disk rotor 11, like the fixing portion 30.

As shown in fig. 12, the outer peripheral frame portion 33 on the disk transfer side extends outward in the disk axial direction from the end edge portion on the disk radial direction outer side of the inner pad support portion 31 on the disk transfer side along the disk axial direction. The outer peripheral frame 34 on the disk feed side extends outward in the disk axial direction from the outer edge of the inner liner support portion 32 on the disk feed side in the disk radial direction.

As shown in fig. 2, the disk-turning-side outer peripheral frame portion 33 extends across the outer peripheral side of the disk rotor 11 in the disk axial direction, and has an umbrella shape covering the disk rotor 11 on the disk radial direction outer side. The outer peripheral frame portion 33 extends along the disk circumferential direction. The outer peripheral frame 34 on the disc-out side also extends in the disc axial direction over the outer peripheral side of the disc rotor 11, and has an umbrella shape covering the disc rotor 11 on the outer side in the disc radial direction. The outer peripheral frame 34 also extends along the disk circumferential direction. The pair of outer peripheral frame portions 33, 34 are each curved in an arc shape so as to follow the outer peripheral surface of the disc rotor 11.

As shown in fig. 10, a pair of outer peripheral frame portions 33, 34 are formed with opposing surfaces 33a, 34a that face each other on the sides of the disk that are closer to each other in the disk circumferential direction. The facing surface 33a formed on the outer peripheral frame portion 33 on the disk rotation side is composed of an outer facing surface portion 33b on the disk radial outer side and an inner facing surface portion 33c on the disk radial inner side. The facing surface 34a formed on the outer peripheral frame 34 on the disc feed side is composed of an outer facing surface 34b on the outer side in the disc radial direction and an inner facing surface 34c on the inner side in the disc radial direction. The outer facing surfaces 33b, 34b and the inner facing surfaces 33c, 34c each extend along the disk axial direction. The inner facing surfaces 33c, 34c are parallel to each other.

Here, a line connecting the central position in the disk circumferential direction of the carrier 21 and the carrier body 29 and the disk center axis and extending in the disk radial direction is set as a disk radial reference line. Then, the inner facing surfaces 33c, 34c extend parallel to the disk radial reference line. The outer facing surface 33b is inclined with respect to the inner facing surface 33c so as to be farther from the inner facing surface 34c in the disk circumferential direction as it is located radially outward of the disk. The outer facing surface 34b is inclined with respect to the inner facing surface 34c so as to be farther from the inner facing surface 33c in the disk circumferential direction as it is located radially outward of the disk. In the tray 21 and the tray main body 29, the central side in the disk circumferential direction is set to be the disk circumferential direction inner side, and the opposite side to the central side in the disk circumferential direction is set to be the disk circumferential direction outer side.

Outer peripheral end surfaces 33d, 34d facing radially outward of the disk are formed at the pair of outer peripheral frame portions 33, 34, respectively, at radially outward end portions of the disk. The outer peripheral end surface 33d formed on the outer peripheral frame portion 33 and the outer peripheral end surface 34d formed on the outer peripheral frame portion 34 are disposed on the same cylindrical surface. The pair of outer peripheral end surfaces 33d, 34d are provided on the outermost side in the disk radial direction in the carrier 21 and the carrier body 29.

As shown in fig. 11, a chamfer 33e is formed adjacent to the disk axial outer side of the disk-turning outer peripheral frame portion 33 and the outer peripheral end surface 33d thereof. A chamfer 34e is formed adjacent to the disk axial outer side of the disk-rotation-side outer peripheral frame 34 and the outer peripheral end surface 34d thereof. The chamfers 33e, 34e face radially outward of the disk and axially outward of the disk. The chamfer angles 33e, 34e taper so as to be located radially inward of the disk as they are located axially outward of the disk. Chamfer 33e and chamfer 34e are disposed on the same conical surface.

As shown in fig. 12, a pair of outer peripheral frame portions 33, 34 are formed with inner peripheral end surfaces 33f, 34f facing radially inward of the disk on the disk axial outer sides of the respective outer pad support portions 35, 36. The inner peripheral end surface 33f formed in the outer peripheral frame portion 33 and the inner peripheral end surface 34f formed in the outer peripheral frame portion 34 are disposed on the same cylindrical surface.

As shown in fig. 14 and 15, planar inner peripheral end surfaces 33g and 34g facing inward in the disk radial direction are formed between the outer pad support portions 35 and 36 and the inner pad support portions 31 and 32, respectively, in the pair of outer peripheral frame portions 33 and 34. The inner peripheral end surface 33g formed on the outer peripheral frame portion 33 extends outward in the disk circumferential direction from the end edge portion on the disk radial direction inner side of the inner opposing surface portion 33 c. The inner peripheral end surface 34g formed on the outer peripheral frame 34 extends outward in the disk circumferential direction from the end edge portion on the disk radial direction inner side of the inner facing surface 34 c. The inner peripheral end surfaces 33g, 34g extend along the disk axial direction and the disk circumferential direction.

Inner flat surfaces 33i, 34i facing inward in the disk radial direction are formed between the outer pad support portions 35, 36 and the inner pad support portions 31, 32, respectively, in the pair of outer frame portions 33, 34. The inner flat surface 33i formed on the outer peripheral frame portion 33 extends in a planar shape from the end edge portion of the inner peripheral end surface 33g on the disc circumferential outer side to the disc circumferential outer side. The inner flat surface 33i expands along the disk axial direction. The inner flat surface 34i formed on the outer peripheral frame 34 extends in a planar shape from the end edge portion of the inner peripheral end surface 34g on the outer side in the disk circumferential direction toward the outer side in the disk circumferential direction. The inner flat surface 34i expands along the disk axial direction. The inner flat surface 33i and the inner flat surface 34i are disposed on the same plane. The plane on which the inner flat surface 33i and the inner flat surface 34i are disposed extends perpendicularly to the disk radial reference line.

An inner Zhou Aozhuang surface 33j, 34j facing radially inward of the disk is formed between the outer pad support portions 35, 36 and the inner pad support portions 31, 32 of the pair of outer frame portions 33, 34. The inner Zhou Aozhuang surface 33j formed on the outer peripheral frame 33 extends outward in the disk circumferential direction from the end edge portion of the inner flat surface 33i on the outer side in the disk circumferential direction. The inner Zhou Aozhuang surface 33j is curved recessed radially outward of the disk from the inner flat surface 33 i. The inner Zhou Aozhuang surface 34j formed on the outer peripheral frame 34 extends outward in the disk circumferential direction from the end edge portion of the inner flat surface 34i on the outer side in the disk circumferential direction. The inner Zhou Aozhuang surface 34j is recessed radially outward of the disk by a curved surface as compared with the inner flat surface 34 i.

Inner peripheral contact surfaces 33k, 34k facing radially inward of the disk are formed between the outer pad support portions 35, 36 and the inner pad support portions 31, 32 of the pair of outer frame portions 33, 34. The inner peripheral contact surface 33k formed on the outer peripheral frame portion 33 extends in a curved surface from the end edge portion of the inner Zhou Aozhuang surface 33j on the outer side in the disk peripheral direction toward the outer side in the disk peripheral direction. The inner peripheral contact surface 34k formed on the outer peripheral frame 34 extends in a curved surface from the end edge portion of the inner Zhou Aozhuang surface 34j on the outer side in the disk peripheral direction toward the outer side in the disk peripheral direction. The inner circumferential contact surface 33k and the inner circumferential contact surface 34k are disposed on the same cylindrical surface centered on the disk center axis.

A planar circumferential end surface 33m located at the disk circumferential outer end is formed between the outer pad support portions 35 and 36 and the inner pad support portions 31 and 32 in the outer peripheral frame portion 33. A planar circumferential end surface 34m located at the disk circumferential outer end is formed between the outer pad support portions 35 and 36 and the inner pad support portions 31 and 32 in the outer peripheral frame portion 34. Here, the inner pad support portion 31 shown in fig. 14 and the outer pad support portion 35 shown in fig. 15 extend to the circumferential end face 33m in the disk circumferential direction, and the inner pad support portion 32 shown in fig. 14 and the outer pad support portion 36 shown in fig. 15 extend to the circumferential end face 34m in the disk circumferential direction.

As shown in fig. 5, the inner peripheral end surfaces 33g, 34g, the inner flat surfaces 33i, 34i, the inner Zhou Aozhuang surfaces 33j, 34j, and the inner peripheral contact surfaces 33k, 34k of the pair of outer peripheral frame portions 33, 34 face the disc rotor 11 in the disc radial direction. The inner peripheral end surfaces 33g, 34g, the inner flat surfaces 33i, 34i, the inner Zhou Aozhuang surfaces 33j, 34j, the inner peripheral abutment surfaces 33k, 34k, and the circumferential end surfaces 33m, 34m overlap with the disk axial position of the disk rotor 11.

As shown in fig. 12, the range between the inner pad support portion 31 and the outer pad support portion 35 of the outer peripheral frame portion 33 in the disk axial direction is a disk transmission portion 57. The range between the inner pad support portion 32 and the outer pad support portion 36 of the outer peripheral frame portion 34 in the disk axial direction is a disk transmission portion 58. As shown in fig. 5, the disk transmission portions 57, 58 of the outer peripheral frame portions 33, 34 cover the disk rotor 11 on the disk radial outer side. The inner peripheral end surface 33g, the inner flat surface 33i, the inner Zhou Aozhuang surface 33j, the inner abutment surface 33k, and the circumferential end surface 33m are provided in the disk transfer portion 57, and the inner peripheral end surface 34g, the inner flat surface 34i, the inner Zhou Aozhuang surface 34j, the inner abutment surface 34k, and the circumferential end surface 34m are provided in the disk transfer portion 58.

As shown in fig. 11 and 12, outer end surfaces 33h, 34h facing outward in the disk axial direction are formed at the respective outer end portions of the outer peripheral frame portions 33, 34 in the disk axial direction. The outer end surface 33h formed in the outer peripheral frame portion 33 and the outer end surface 34h formed in the outer peripheral frame portion 34 are disposed on the same plane. The plane is a plane extending perpendicularly to the disk axis.

As shown in fig. 14 and 15, a pair of pin insertion holes 43, 44 extending in the disk axial direction are formed in the bracket main body 29 at portions on the inner side in the disk circumferential direction of each of the pair of outer peripheral frame portions 33, 34. A pin insertion hole 43 is formed in the outer peripheral frame portion 33 from the inner end portion to a predetermined intermediate position in the disk axial direction. The outer peripheral frame 34 has another pin insertion hole 44 formed from the inner end to a predetermined position in the middle in the disk axial direction.

A pair of slide pins 45 on both sides in the disk circumferential direction of the brake caliper 22 shown in fig. 2 are slidably fitted into a pair of pin insertion holes 43, 44 in the bracket main body 29. Thus, the bracket main body 29 supports the caliper 22 in the pair of outer peripheral frame portions 33 and 34 so as to be slidable in the disc axial direction. In other words, as shown in fig. 5 and 6, a pair of slide pins 45 of the caliper 22 provided on both sides in the disk circumferential direction are slidably fitted in the corresponding pin insertion holes 43, 44 of the bracket main body 29, respectively. Thereby, the brake caliper 22 is supported by the bracket body 29 so as to be movable in the disc axial direction.

The pair of outer pad support portions 35 and 36 shown in fig. 15 each have a plate shape extending perpendicularly to the disk axial direction. As shown in fig. 12, the outer pad support portion 35 on the one disk rotation side of the pair of outer pad support portions 35, 36 extends inward in the disk radial direction from an intermediate position on the outer side in the disk axial direction than the inner pad support portion 31 of the outer peripheral frame portion 33 on the disk rotation side. The outer pad support portion 36 on the other disc-out side of the pair of outer pad support portions 35, 36 extends inward in the disc radial direction from an intermediate position further outward in the disc axial direction than the inner pad support portion 32 of the outer peripheral frame portion 34 on the disc-out side. As shown in fig. 2, the pair of outer pad supporting portions 35, 36 are arranged on the outer side in the disk axial direction with respect to the disk rotor 11.

As shown in fig. 12, the pair of outer pad support portions 35, 36 are located further inward in the disk axial direction than the respective outer end surfaces 33h, 34h of the pair of outer frame portions 33, 34. In other words, the pair of outer frame portions 33, 34 protrude outward in the disk axial direction than the outer end surfaces 35c, 36c of the respective disk axial direction outer end portions of the pair of outer pad support portions 35, 36. The outer end surface 35c of the outer pad support portion 35 and the outer end surface 36c of the outer pad support portion 36 are disposed on the same plane toward the disk axial outer side. The plane is parallel to the plane on which the outer end surfaces 33h, 34h of the pair of outer peripheral frame portions 33, 34 are arranged.

The coupling beam portion 37 extends in the disk circumferential direction and couples the disk radial inner sides of the pair of outer pad support portions 35, 36 to each other. The disk rotation side end of the coupling beam portion 37 is coupled to the disk rotation side end of the outer peripheral frame portion 33. The end of the coupling beam portion 37 on the tray-out side is coupled to the end of the outer peripheral frame portion 34 on the tray-out side. The coupling beam portion 37 is disposed on the outer side of the disc rotor 11 in the disc axial direction, as is the case with the pair of outer pad support portions 35 and 36.

As shown in fig. 11, the coupling beam portion 37 has an outward end surface 37a facing the disk radial outer side at the disk radial outer side end, and has an inward end surface 37b facing the disk radial inner side at the disk radial inner side end as shown in fig. 12. An outer end surface 37c facing the outer side in the disk axial direction is formed at the outer end of the tie-beam portion 37 in the disk axial direction.

As shown in fig. 11, the entirety of the tie-bar portion 37 protrudes outward in the disk axial direction than the outer end surfaces 35c, 36c of the pair of outer pad support portions 35, 36. In other words, the pair of outer pad support portions 35, 36 are located further inward in the disk axial direction than the outer end surface 37c of the disk axial direction outer end portion of the tie-beam portion 37. The outer end surface 37c of the coupling beam portion 37 is disposed on the same plane as the outer end surfaces 33h, 34h of the pair of outer frame portions 33, 34, and constitutes the outer end surface 21a of the tray 21 and the tray main body 29 at the outer end in the disk axial direction.

The connecting beam portion 37 is connected adjacent to the disk-turning-side outer peripheral frame portion 33 at an acute angle. The linking beam portion 37 is also connected adjacent to the disk-roll-out-side outer peripheral frame portion 34 so as to form an acute angle. In other words, the pair of outer peripheral frame portions 33 and 34 are connected to the tie beam portion 37 at an acute angle.

The linking beam portion 37 is constituted by a disk-in-side portion constituting portion 51, a disk-out-side portion constituting portion 52, and an intermediate constituting portion 53 therebetween. The intermediate structure 53 is linear and extends perpendicularly to the disk radial reference line. The partial constituting portion 51 overlaps with the disk circumferential position of the outer pad support portion 35. The partial constituent portion 52 overlaps with the disk circumferential position of the outer pad support portion 36. The intermediate structure 53 is provided at a position between the pair of outer pad support portions 35, 36 in the disk circumferential direction. The partial constituent parts 51 and 52 are inclined with respect to the intermediate constituent part 53 so as to be located radially outward of the disk in the direction of the disk radial reference line as they are separated from the intermediate constituent part 53 in the disk circumferential direction.

As shown in fig. 14, a pair of concave support body portions 60, 61 are formed in the pair of inner pad support portions 31, 32. As shown in fig. 15, a pair of concave support body portions 62, 63 are formed in the pair of outer pad support portions 35, 36. These support body portions 60, 61, 62, 63 have the same shape.

As shown in fig. 14, the inner pad support portion 31 on the one disc transfer side has a support body portion 60 formed in a shape recessed toward the disc circumferential outside from a surface 31a located on the disc circumferential inside and the surface 31b located on the disc radial inside. The surfaces 31a and 31b extend along the disk axial direction and along the disk radial direction reference line. In the inner pad support portion 31, the surface 31a on the outer side in the disk radial direction is disposed further toward the outer side in the disk circumferential direction than the surface 31b on the inner side in the disk radial direction. The surface 31a is continuous with the inner facing surface 33c of the outer peripheral frame 33 adjacent to the inner pad support 31, which is disposed on the same plane.

The other inner liner support portion 32 on the disc feed side is also formed with a support body portion 61 having a shape recessed toward the disc circumferential outer side from the disc circumferential inner side surface 32a and the disc radial inner side surface 32b thereof. The surfaces 32a and 32b extend along the disk axial direction and along the disk radial direction reference line. In the inner pad support portion 32, the surface 32a on the outer side in the disk radial direction is arranged further toward the outer side in the disk circumferential direction than the surface 32b on the inner side in the disk radial direction. The surface 32a is continuous with the inner facing surface 34c of the outer peripheral frame 34 adjacent to the inner pad support portion 32, which is disposed on the same plane.

The pair of inner pad support portions 31 and 32 are arranged such that surfaces 31a and 32a thereof are aligned parallel to each other at positions in the disk axial direction and the disk radial direction. The pair of inner pad support portions 31 and 32 are arranged such that surfaces 31b and 32b thereof are aligned parallel to each other at positions in the disk axial direction and the disk radial direction. The support main portions 60, 61 of the pair of inner pad support portions 31, 32 are aligned at positions in the disk axial direction and the disk radial direction.

Accordingly, the pair of inner pad support portions 31 and 32 are formed with concave support body portions 60 and 61 recessed in a direction away from each other along the disk circumferential direction on opposite sides. As shown in fig. 6, one friction pad 24 of the pair of friction pads 24, 25 is supported by a support main body portion 60 provided on the inner pad support portion 31 and a support main body portion 61 provided on the inner pad support portion 32.

As shown in fig. 15, one outer pad support portion 35 has a support body portion 62 formed in a shape recessed toward the disc circumferential outer side from a disc radial outer side surface 35a and a disc radial inner side surface 35b located on the disc circumferential inner side thereof. The surfaces 35a and 35b extend along the disk axial direction and along the disk radial direction reference line. In the outer pad support portion 35, a surface 35a located on the outer side in the disk radial direction is disposed further toward the outer side in the disk circumferential direction than a surface 35b located on the inner side in the disk radial direction. The surface 35a is continuous with the inner facing surface 33c of the outer peripheral frame 33 adjacent to the outer pad support 35, and is disposed on the same plane.

The other outer pad support portion 36 is also formed with a support body portion 63 recessed toward the disc circumferential outer side from a disc radial outer side surface 36a and a disc radial inner side surface 36b located on the disc circumferential inner side thereof. The faces 36a and 36b extend along the disk axial direction and along the disk radial reference line. In the outer pad support portion 36, a surface 36a on the outer side in the disk radial direction is disposed further toward the outer side in the disk circumferential direction than a surface 36b on the inner side in the disk radial direction. The surface 36a is continuous with the inner facing surface 34c of the outer peripheral frame 34 adjacent to the outer pad support 36, and is disposed on the same plane.

The pair of outer pad support portions 35, 36 are arranged such that the surfaces 35a, 36a are aligned parallel to each other at positions in the disk axial direction and the disk radial direction. The pair of outer pad support portions 35, 36 are arranged so that surfaces 35b, 36b thereof are aligned parallel to each other at positions in the disk axial direction and the disk radial direction. The support main portions 62, 63 of the pair of outer pad support portions 35, 36 are aligned at positions in the disk axial direction and the disk radial direction.

Accordingly, the pair of outer pad support portions 35 and 36 are formed with concave support body portions 62 and 63 recessed in a direction away from each other along the disk circumferential direction on opposite sides. As shown in fig. 1, the other friction pad 24 of the pair of friction pads 25, 25 is supported by a support main body portion 62 provided on the outer pad support portion 35 and a support main body portion 63 provided on the outer pad support portion 36.

Here, as shown in fig. 14, the circumferential end surfaces 33m, 34m of the pair of outer peripheral frame portions 33, 34 are located further inward in the disk radial direction than the ends of the surfaces 31b, 32b of the pair of inner pad support portions 31, 32 in the extending direction of the disk radial reference line. As shown in fig. 15, the circumferential end surfaces 33m, 34m of the pair of outer frame portions 33, 34 are located further inward in the disk radial direction than the ends of the surfaces 35b, 36b of the pair of outer pad support portions 35, 36 in the extending direction of the disk radial reference line.

The outer pad support portion 35 is formed inside the disk axial direction: an inward end surface 35d that extends outward in the disk circumferential direction from the support body 62 and the surfaces 35a and 35 b; a small step surface 35e extending slightly from the disk circumferential outer side of the inner-to-end surface 35d toward the disk axial outer side; and an intermediate surface 35f extending outward in the disk circumferential direction from an end edge portion of the small step surface 35e on the disk axial direction outer side.

Further, the outer pad support portion 35 is formed with: a large step surface 35g extending from the disk circumferential outer side of the intermediate surface 35f to the disk axial outer side; and an inward contact surface 35h extending outward in the disk circumferential direction from an end edge portion of the large step surface 35g on the disk axial outer side. The inward abutment surface 35h extends to an end edge portion of the inner Zhou Aozhuang surface 33j on the disk axial outer side of the inner peripheral abutment surface 33 k. The inward contact surface 35h extends to a surface portion 35i of the outer pad support portion 35 facing outward in the disk circumferential direction. The surface portion 35i is flat and inclined so as to be located radially outward of the disk in the direction of the disk radial reference line as it becomes farther from the outer pad support portion 36 in the disk circumferential direction. The face 35i is coplanar with the circumferential end face 33m of the outer peripheral frame portion 33.

The inward end surface 35d, the intermediate surface 35f, and the inward contact surface 35h are flat surfaces extending perpendicularly to the disk axial direction. The large step surface 35g is planar along the disk axial direction and along the disk radial reference line.

In the outer pad support portion 35, a first engagement hole 171 recessed outward in the disk axial direction from the intermediate surface 35f is formed in the intermediate surface 35 f. The first engagement hole 171 is a rectangular long hole long in the disk circumferential direction. A second engagement hole 172 recessed outward in the disk axial direction from the inward contact surface 35h is formed in the outer pad support portion 35 near the end portion of the inward contact surface 35h on the opposite side of the outer pad support portion 36 in the disk circumferential direction. The second engagement hole 172 is a rectangular long hole extending along the face 35 i.

The outer pad support portion 36 is formed on the inner side in the disk axial direction with: an inward end surface 36d that extends outward in the disk circumferential direction from the support body 63 and the surfaces 36a and 36 b; a small step surface 36e extending slightly from the disk circumferential outer side of the inner-to-end surface 36d toward the disk axial outer side; and an intermediate surface 36f extending outward in the disk circumferential direction from an end edge portion of the small step surface 36e on the disk axial direction outer side.

Further, the outer pad support portion 36 is formed with: a large step surface 36g extending from the disk circumferential outer side of the intermediate surface 36f to the disk axial outer side; an inward abutment surface 36h extending outward in the disk circumferential direction from an end edge portion of the large step surface 36g on the disk axial outer side. The inward abutment surface 36h extends to the disk-axially outer end edge portions of the inner Zhou Aozhuang surface 34j and the inner peripheral abutment surface 34 k. The inward contact surface 36h extends to a surface 36i of the outer pad support portion 36 facing outward in the disk circumferential direction. The surface 36i is flat and inclined so as to be located radially outward of the disk in the direction of the disk radial reference line as it is farther from the outer pad support portion 35 in the disk circumferential direction. The face 36i is coplanar with the circumferential end face 34m of the outer peripheral frame portion 34.

The inward end surface 36d, the intermediate surface 36f, and the inward contact surface 36h are flat surfaces extending perpendicularly to the disk axial direction. The large step surface 36g is planar along the disk axial direction and along the disk radial reference line. The inward end face 35d and the inward end face 36d are disposed on the same plane. The intermediate surface 35f and the intermediate surface 36f are also disposed on the same plane. The inward abutment surface 35h and the inward abutment surface 36h are also disposed on the same plane.

In the outer pad support portion 36, a first engagement hole 173 recessed outward in the disk axial direction from the intermediate surface 36f is formed in the intermediate surface 36 f. The first engagement hole 173 is a rectangular long hole long in the disk circumferential direction. In the outer pad support portion 36, a second engagement hole 174 recessed outward in the disk axial direction from the inner contact surface 36h is formed near an end portion of the inner contact surface 36h on the opposite side of the outer pad support portion 35 in the disk circumferential direction. The second engagement hole 174 is a rectangular long hole extending along the face 36 i.

As shown in fig. 14, the inner pad support portion 31 is formed on the outer side in the disk axial direction: an outward end surface 31d that extends outward in the disk circumferential direction from the support body 60 and the surfaces 31a and 31 b; a small step surface 31e extending slightly from the disk circumferential outer side of the outer-facing end surface 31d toward the disk axial inner side; and an intermediate surface 31f extending outward in the disk circumferential direction from an end edge portion of the small step surface 31e on the disk axial direction inner side.

Further, the inner pad support portion 31 is formed with: a large step surface 31g extending from the disk circumferential outer side of the intermediate surface 31f toward the disk axial inner side; and an outward abutment surface 31h extending outward in the disk circumferential direction from an end edge portion of the large step surface 31g on the disk axial inner side. The outward contact surface 31h extends to the inner Zhou Aozhuang surface 33j and the inner circumferential contact surface 33k at the inner end edge in the disk axial direction. The outward contact surface 31h extends to a surface 31i of the inner pad support portion 31 facing outward in the disk circumferential direction. The surface portion 31i is flat and inclined so as to be located radially outward of the disk in the direction of the disk radial reference line as it becomes farther from the inner pad support portion 32 in the disk circumferential direction.

The outward end surface 31d, the intermediate surface 31f, and the outward contact surface 31h are flat surfaces extending perpendicularly to the disk axial direction. The large step surface 31g is planar along the disk axial direction and along the disk radial reference line. The large step surface 31g and the large step surface 35g are arranged on the same plane.

In the inner pad support portion 31, a first engagement hole 181 is formed in the intermediate surface 31f, the first engagement hole being recessed inward in the disk axial direction from the intermediate surface 31 f. The first engagement hole 181 is a rectangular long hole long in the disk circumferential direction. The first engagement hole 181 is aligned with the first engagement hole 171 in positions in the disk radial direction and the disk circumferential direction, and is opposed in the disk axial direction. In the inner pad support portion 31, a second engagement hole 182 recessed inward in the disk axial direction from the outward contact surface 31h is formed near an end portion of the outward contact surface 31h on the opposite side of the inner pad support portion 32 in the disk circumferential direction. The second engagement hole 182 is a rectangular long hole extending along the face 31i. The second engagement hole 182 is aligned with the second engagement hole 172 in positions in the disk radial direction and the disk circumferential direction, and is opposed in the disk axial direction.

The inner pad support portion 32 is formed on the outer side in the disk axial direction: an outward end surface 32d that extends outward in the disk circumferential direction from the support body 61 and the surfaces 32a and 32 b; a small step surface 32e extending slightly from the disk circumferential outer side of the outer-facing end surface 32d toward the disk axial inner side; and an intermediate surface 32f extending outward in the disk circumferential direction from an end edge portion of the small step surface 32e on the disk axial direction inner side.

Further, the inner pad support portion 32 is formed with: a large step surface 31g extending from the disk circumferential outer side of the intermediate surface 32f toward the disk axial inner side; and an outward abutment surface 32h extending outward in the disk circumferential direction from an end edge portion of the large step surface 32g on the disk axial inner side. The outward contact surface 32h extends to the inner Zhou Aozhuang surface 34j and the end edge portion of the inner circumferential contact surface 34k on the inner side in the disk axial direction. The outward contact surface 32h extends to a surface portion 32i of the inner pad support portion 32 facing outward in the disk circumferential direction. The surface portion 32i is flat and inclined so as to be located radially outward of the disk in the direction of the disk radial reference line as it becomes farther from the inner pad support portion 31 in the disk circumferential direction.

The outward end surface 32d, the intermediate surface 32f, and the outward contact surface 32h are flat surfaces extending perpendicularly to the disk axial direction. The outward end face 31d and the outward end face 32d are disposed on the same plane. The intermediate surface 31f and the intermediate surface 32f are also disposed on the same plane. The outward contact surface 31h and the outward contact surface 32h are also disposed on the same plane. The large step surface 32g is planar along the disk axial direction and along the disk radial reference line. The large step surface 32g and the large step surface 36g are arranged on the same plane.

In the inner pad support portion 32, a first engagement hole 183 recessed inward in the disk axial direction from the intermediate surface 32f is formed in the intermediate surface 32 f. The first engagement hole 183 is a rectangular long hole long in the disk circumferential direction. The first engagement hole 183 is aligned with the first engagement hole 173 in the disk radial direction and the disk circumferential direction, and is opposed in the disk axial direction. The inner pad support portion 32 has a second engagement hole 184 recessed inward in the disk axial direction from the outward contact surface 32h in the vicinity of an end portion of the outward contact surface 32h on the opposite side of the inner pad support portion 31 in the disk circumferential direction. The second engagement hole 184 is a rectangular long hole extending along the face 32 i. The second engagement hole 184 is aligned with the second engagement hole 174 in positions in the disk radial direction and the disk circumferential direction, and is opposed in the disk axial direction.

As shown in fig. 7, a disk-turning-side filter unit 55 (second filter unit) is attached to the tray main body 29 between the inner pad support unit 31 and the outer pad support unit 35 on the disk turning side and radially inward of the disk of the outer peripheral frame unit 33. The filter 55 is provided on the disk rotation side of the tray 21 as a whole.

A disk-feed-side filter unit 56 (first filter unit) is attached to the tray main body 29 between the inner liner support unit 32 and the outer liner support unit 36 on the disk feed side and radially inward of the outer peripheral frame unit 34. The filter unit 56 is provided on the tray-out side of the tray 21 as a whole.

The filter parts 55 and 56 are common members and are arranged in mirror symmetry on the bracket main body 29. As shown in fig. 7 to 9, the filter units 55 and 56 are each composed of a dust collecting unit 191 and an attachment plate 192, the dust collecting unit 191 being composed of a porous elastic body for capturing brake dust, and the attachment plate 192 being composed of an elastic body for attaching the dust collecting unit 191 to the bracket main body 29. The mounting plate 192 has a positioning plate portion 193 made of an elastic body for positioning the dust collection portion 191 and a clip plate portion 194 made of an elastic body for supporting the dust collection portion 191.

As shown in fig. 16 to 18, the dust collection portion 191 includes a pair of flat plate-shaped side plate portions 202 and 203 which are parallel to each other and have substantially the same fan shape, and a curved portion 204 which has a partial shape of a substantially cylinder and connects the arcuate end edges of the pair of side plate portions 202 and 203 to each other. The curved portion 204 has a protrusion 205 protruding from between the pair of side plate portions 202, 203.

The side plate portion 202 includes a planar outer surface portion 202a facing the opposite side of the side plate portion 203, a planar inner surface portion 202b facing the side plate portion 203, a planar inclined surface portion 202c extending obliquely from the outer surface portion 202a to the outer surface portion 202a in the opposite direction from the protruding portion 205, a planar surface portion 202d connecting the outer surface portion 202a and the inclined surface portion 202c with the inner surface portion 202b, and a planar surface portion 202e connecting the end edge portion of the inclined surface portion 202c opposite to the outer surface portion 202a with the inner surface portion 202 b.

The side plate portion 203 includes a planar outer surface portion 203a facing the opposite side of the side plate portion 202, a planar inner surface portion 203b facing the side plate portion 202, a planar inclined surface portion 203c extending obliquely from the outer surface portion 203a to the outer surface portion 203a in the opposite direction from the protruding portion 205, a planar surface portion 203d connecting the outer surface portion 203a and the inclined surface portion 203c with the inner surface portion 203b, and a planar surface portion 203e connecting the end edge portion of the inclined surface portion 203c opposite to the outer surface portion 203a with the inner surface portion 203 b. The outer surface portions 202a, 203a and the inner surface portions 202b, 203b are expanded parallel to each other. The face portions 202d and 203d are disposed on the same plane orthogonal to the outer face portions 202a and 203a and the inner face portions 202b and 203 b. The faces 202e and 203e are arranged on the same plane orthogonal to the faces 202d and 203 d. The inclined surface portion 202c is inclined so as to be closer to the inner surface portion 202b as it is farther from the outer surface portion 202a, and the inclined surface portion 203c is inclined so as to be closer to the inner surface portion 203b as it is farther from the outer surface portion 203 a.

The dust collection portion 191 has a planar top surface portion 205a facing opposite to the face portions 202e and 203e at an end portion of the curved portion 204 opposite to the face portions 202e and 203e including the protrusion portion 205. The protruding portion 205 is provided with a face 205b connected to the face 202d and a face 205c connected to the face 203 d.

The curved portion 204 has an inner curved surface portion 204a located on the center side of the curvature and having a partial shape of a cylindrical surface, an outer curved surface portion 204b located on the opposite side of the center of the curvature and having a partial shape of a cylindrical surface, and a planar surface portion 204c located on the opposite side of the top surface portion 205 a. The inner curved surface portion 204a is substantially coaxial with the outer curved surface portion 204 b. The face 204c extends parallel to the top surface 205a and is disposed on the same plane as the faces 202e and 203 e.

As shown in fig. 19 to 21, the positioning plate portion 193 includes a curved plate portion 211 curved in a partial shape of a cylinder, and a pair of flat plate-shaped attachment portions 212, 213 protruding outward in the axial direction of the curved plate portion 211 from both end edge portions in the axial direction of the curved plate portion 211 on one end side in the circumferential direction of the curved plate portion 211. The curved plate portion 211 has a shape of a part of a cylindrical surface coaxial with the radially inner curved surface portion 211a and the radially outer curved surface portion 211 b. The pair of attachment portions 212 and 213 are inclined with respect to the curved plate portion 211 so as to be located radially inward of the curved plate portion 211 as the distance from the curved plate portion 211 in the axial direction of the curved plate portion 211 increases.

As shown in fig. 22 and 23, the clip plate portion 194 includes a flat plate-shaped base plate portion 221, and a pair of curved plate-shaped attachment portions 222 and 223 protruding from both ends of the base plate portion 221 in the longitudinal direction toward both sides of the base plate portion 221 in the longitudinal direction. Since the mounting portions 222, 223 are mirror-symmetrical, one mounting portion 222 will be described herein. The mounting portion 222 includes a protruding plate portion 231 protruding obliquely from one end portion in the longitudinal direction of the substrate portion 221 to the outside in the longitudinal direction of the substrate portion 221 and to one side in the plate thickness direction of the substrate portion 221, an intermediate plate portion 232 protruding obliquely from an end edge portion of the protruding plate portion 231 on the opposite side to the substrate portion 221 to the outside in the longitudinal direction of the substrate portion 221 and to the opposite side in the plate thickness direction of the substrate portion 221, and a front end plate portion 233 protruding obliquely from an end edge portion of the intermediate plate portion 232 on the opposite side to the protruding plate portion 231 to the inside in the longitudinal direction of the substrate portion 221 and to the opposite side in the plate thickness direction of the substrate portion 221. The other mounting portion 223 also has the same protruding plate portion 231, intermediate plate portion 232, and front end plate portion 233.

As shown in fig. 8, when the filter portion 55 is mounted on the bracket main body 29, the dust collecting portion 191 thereof abuts with the outward abutment surface 31h of the inner pad support portion 31 in surface contact at the outer surface portion 202a, and abuts with the large step surface 31g in surface contact at the surface portion 202 d. The dust collection portion 191 of the filter portion 55 is in contact with the inward contact surface 35h of the outer pad support portion 35 at the outer surface portion 203a, and in contact with the large step surface 35g at the surface portion 203 d. As shown in fig. 9, the dust collection portion 191 of the filter unit 55 is in contact with the inner peripheral contact surface 33k of the outer peripheral frame portion 33 at the outer curved surface portion 204b, and in contact with the inner flat surface 33i at the top surface portion 205 a.

The filter unit 55 brings the dust collection unit 191 into such a state that the positioning plate 193 comes into contact with the inner curved surface portion 204a of the dust collection unit 191 with surface contact at the outer curved surface portion 211b of the curved plate 211. As shown in fig. 24, the mounting portion 212 of the positioning plate portion 193 engages with the first engagement hole 181 of the inner pad support portion 31, and the mounting portion 213 engages with the first engagement hole 171 of the outer pad support portion 35. Then, the positioning plate 193 is disposed in the direction of the disk center axis with respect to the dust collection portion 191. In this state, as shown in fig. 9, the positioning plate 193 presses the curved portion 204 of the dust collection portion 191 against the outer peripheral frame portion 33 so as to be in surface contact with the inner peripheral contact surface 33k at the outer curved surface portion 204 b. The positioning plate 193 positions the dust collection unit 191 with respect to the carriage main body 29. As shown in fig. 8, the dust collection portion 191 positioned by the positioning plate 193 is in contact with the outward contact surface 31h at the outer surface 202a, in contact with the inward contact surface 35h at the outer surface 203a, and in contact with the inner peripheral contact surface 33k at the outer curved surface 204b, as shown in fig. 9.

Here, in order to position the dust collection portion 191, as shown in fig. 24, when the positioning plate portion 193 is attached to the bracket main body 29, the attachment portions 212 and 213 are extended inward in the disk radial direction from the curved plate portion 211, and the curved plate portion 211 is extended inward in the disk radial direction from the attachment portions 212 and 213, so that the positioning plate portion 193 is moved outward in the disk radial direction from the disk radial direction inward. Then, the positioning plate 193 slides on the intermediate surfaces 31f and 35f in a state where the mounting portions 212 and 213 are elastically deformed toward the curved plate portion 211 side by the intermediate surfaces 31f and 35f, and when the positioning plate is positioned at the first engagement holes 181 and 171, the mounting portion 212 enters the first engagement hole 181 by restoration of the elastic deformation, and the mounting portion 213 enters the first engagement hole 171. Thus, the positioning plate 193 is in surface contact with the curved portion 204 of the dust collection portion 191 at the curved plate portion 211, and is pressed against and supported by the outer peripheral frame portion 33 so that the dust collection portion 191 is in surface contact with the bracket main body 29. The mounting portions 212 and 213 set the positional relationship and the angular relationship with the first engagement holes 181 and 171 so as to be in such a state. The mounting portions 212 and 213 are portions for mounting the positioning plate portion 193 to the bracket main body 29.

When positioning the dust collection portion 191, the positioning plate portion 193 is in a state in which the flat plate-like attachment portions 212, 213 extend obliquely from the curved plate portion 211 to the disk radial direction inner side so that the tip portions are separated from each other, and enter the first engagement holes 181, 171 at the tip portions, and therefore, is in a state of being difficult to detach from the bracket main body 29.

The disc-turning-side filter unit 55 brings the dust collection unit 191 into the above-described positioning state, and as shown in fig. 9, the clip plate portion 194 comes into surface contact with the face 204c of the dust collection unit 191 at the base plate portion 221, and as shown in fig. 25, the attachment portion 222 engages with the second engagement hole 182 of the inner pad support portion 31, and the attachment portion 223 engages with the second engagement hole 172 of the outer pad support portion 35. The clip plate portion 194 is disposed laterally in the disk circumferential direction with respect to the dust collection portion 191, specifically, on the disk rotation-in side. In this state, the clip plate portion 194 presses the dust collection portion 191 against the outer peripheral frame portion 33 so as to be in surface contact with the inner flat surface 33i at the top surface portion 205 a. Thereby, the clip plate portion 194 restricts movement of the dust collection portion 191 in the disk circumferential direction in a state of being positioned on the carrier body 29 by the positioning plate portion 193 by the inner flat surface 33 i.

Here, in order to restrict the dust collection portion 191 from falling out from between the positioning plate portion 193 and the bracket main body 29, as shown in fig. 25, the clip plate portion 194 is attached to the bracket main body 29. When the clip plate 194 is attached to the bracket main body 29, the clip plate 194 is moved from the disk radially inner side to the disk radially outer side in a state where the attachment portions 222 and 223 protrude from the base plate 221 to the disk radially outer side. Then, the clip plate portion 194 slides on the outward abutment surface 31h and the inward abutment surface 35h in a state where the mounting portions 222 and 223 are elastically deformed toward the substrate portion 221 by the outward abutment surface 31h and the inward abutment surface 35h, and when the clip plate portion is positioned at the second engagement holes 182 and 172, the mounting portion 222 enters the second engagement hole 182 at the boundary side portion between the intermediate plate portion 232 and the front end plate portion 233 by restoration of the elastic deformation, and the mounting portion 223 enters the second engagement hole 172 at the boundary side portion between the intermediate plate portion 232 and the front end plate portion 233. As a result, as shown in fig. 9, the clip plate 194 abuts against the face 204c located at the front end of the dust collection portion 191 in the direction of falling off from between the positioning plate 193 and the bracket body 29 at the base plate 221, and the falling off of the dust collection portion 191 is restricted. At this time, as shown in fig. 25, since the inclined surface portions 202c, 203c are formed on the dust collection portion 191, the attachment portions 222, 223 can easily enter between the dust collection portion 191 and the bracket main body 29. The mounting portions 222 and 223 set the positional relationship and the angular relationship with the second engagement holes 182 and 172 so as to be in such a state. The mounting portions 222 and 223 are portions for mounting the clip plate portion 194 on the bracket main body 29.

The front end plate portion 233 of the mounting portion 222 of the clip plate portion 194 and the front end plate portion 233 of the mounting portion 223 extend obliquely toward the disk rotation side from the outer contact surface 31h and the inner contact surface 35h facing each other so as to approach each other. Therefore, by performing an operation from the disk rotation side, the front end plate portions 233 of the mounting portions 222, 223 are elastically deformed so as to approach each other, and the clip plate portion 194 can be easily detached from the bracket main body 29.

In the filter unit 55, when the dust collection unit 191 is maintained, the clip plate portion 194 is detached from the bracket main body 29 as described above, and then the dust collection unit 191 is slid toward the disk rotation side with the clip plate portion 194 along the disk circumferential direction, the dust collection unit 191 can be easily pulled out from between the positioning plate portion 193 and the bracket main body 29. Thus, the dust collection portion 191 can be detached from the bracket body 29 without detaching the bracket body 29 from the vehicle. Further, from the state where the dust collection portion 191 is removed, the dust collection portion 191 for cleaning or replacement is inserted between the positioning plate portion 193 and the bracket main body 29 from the side having the clip plate portion 194 along the disk circumferential direction, and then the clip plate portion 194 is attached, whereby the dust collection portion 191 can be fixed to the bracket main body 29.

The filter unit 56 on the disc feed side is attached to the tray main body 29 in a mirror-symmetrical manner to the filter unit 55, similarly to the filter unit 55. Then, as shown in fig. 8, the dust collection portion 191 of the filter portion 56 abuts with the inward abutment surface 36h of the outer pad support portion 36 at the outer surface portion 202a in surface contact, and abuts with the large step surface 36g at the surface portion 202d in surface contact. Further, the dust collection portion 191 of the filter portion 56 is abutted with the outward abutment surface 32h of the inner pad support portion 32 at the outer surface portion 203a in surface contact, and is abutted with the large step surface 32g at the surface portion 203d in surface contact. As shown in fig. 9, the dust collection portion 191 of the filter unit 56 is in contact with the inner peripheral contact surface 34k of the outer peripheral frame 34 with surface contact at the outer curved surface portion 204b, and is in contact with the inner flat surface 34i with surface contact at the top surface portion 205 a.

The positioning plate 193 of the filter unit 56 is engaged with the first engagement hole 173 shown in fig. 15 of the outer pad support 36 at the mounting portion 212 shown in fig. 8, and is engaged with the first engagement hole 183 of the inner pad support 32 at the mounting portion 213 as shown in fig. 9. Thereby, the positioning plate 193 of the filter unit 56 positions the dust collection unit 191 in the above state.

The clip plate 194 of the filter unit 56 is engaged with the second engaging hole 174 of the outer pad support 36 shown in fig. 15 at the mounting portion 222 shown in fig. 8, and the mounting portion 223 is engaged with the second engaging hole 184 of the inner pad support 32 as shown in fig. 7. Thereby, the clip plate portion 194 of the filter portion 56 supports the dust collection portion 191 so as to maintain the above-described state.

As described above, the bracket 21 is formed by attaching the filter unit 55 and the filter unit 56 to the bracket body 29. As shown in fig. 8, the inner peripheral surface 21b of the bracket 21 is constituted by inner peripheral end surfaces 33g, 34g and inner flat surfaces 33i, 34i on the inner side in the disk radial direction of the outer peripheral frame portions 33, 34 of the bracket main body 29, an inner curved surface portion 204a on the inner side in the disk radial direction of the curved portion 204 of the dust collecting portion 191 of the filter portion 55, an inner curved surface portion 211a on the inner side in the disk radial direction of the curved plate portion 211 of the positioning plate portion 193 of the filter portion 55, an inner curved surface portion 204a on the inner side in the disk radial direction of the curved portion 204 of the dust collecting portion 191 of the filter portion 56, and an inner curved surface portion 211a on the inner side in the disk radial direction of the curved plate portion 211 of the positioning plate portion 193 of the filter portion 56. As shown in fig. 5, the inner peripheral surface 21b is formed along the outer peripheral edge of the disk radial direction outer side of the disk rotor 11.

The filter portion 55 and the filter portion 56 located on the inner peripheral surface 21b of the bracket 21 are provided facing the outer peripheral edge of the disc rotor 11. In other words, the bracket 21 includes an inner peripheral surface 21b formed along the outer peripheral edge of the disc rotor 11, and filter portions 55, 56 provided on the inner peripheral surface 21b and facing the outer peripheral edge of the disc rotor 11. The filter unit 55 and the filter unit 56 are provided on both the disk transfer side and the disk transfer side of the tray 21, and thus the dust collection unit 191 of the filter unit 55 and the dust collection unit 191 of the filter unit 56 are also provided on both the disk transfer side and the disk transfer side of the tray 21.

An integral spacer spring 26 is attached to the inner spacer support portion 31 shown in fig. 6 and the outer spacer support portion 35 shown in fig. 1, both of which are disc-turning sides, at positions of the support main portions 60 and 62. As shown in fig. 6, the pad spring 26 includes a concave guide portion 70 fitted to the support body portion 60, an outer cover portion 71 located radially outward of the disk of the guide portion 70 and covering the surface 31a, an inner cover portion 72 located radially inward of the disk of the guide portion 70 and covering the surface 31b, and a radial biasing portion 73 located radially inward of the inner cover portion 72 and biasing the friction pad 24 axially inward of the disk toward the radially outward and disk-rotating-out side of the disk.

As shown in fig. 1, the pad spring 26 includes a concave guide portion 75 fitted to the support body portion 62, an outer cover portion 76 located radially outward of the guide portion 75 and covering the surface 35a, an inner cover portion 77 located radially inward of the guide portion 75 and covering the surface 35b, and a radial biasing portion 78 located radially inward of the inner cover portion 77 and biasing the friction pad 25 axially outward of the disk toward the disk radial outward and disk rotation side.

An integral spacer spring 27 is attached to the inner spacer support portion 32 shown in fig. 6 and the outer spacer support portion 36 shown in fig. 1, both of which are on the disc-out side, at positions of these support main body portions 61, 63. As shown in fig. 6, the pad spring 27 includes a concave guide portion 80 fitted to the support body portion 61, an outer cover portion 81 located radially outward of the guide portion 80 and covering the surface 32a, an inner cover portion 82 located radially inward of the guide portion 80 and covering the surface 32b, and a radial biasing portion 83 located radially inward of the inner cover portion 82 and biasing the friction pad 24 axially inward of the disk toward the radially outward of the disk and toward the disk rotation side.

As shown in fig. 1, the pad spring 27 includes a concave guide portion 85 fitted to the support body portion 63, an outer cover portion 86 located radially outward of the guide portion 85 and covering the surface 36a, an inner cover portion 87 located radially inward of the guide portion 85 and covering the surface 36b, and a radial biasing portion 88 located radially inward of the inner cover portion 87 and biasing the friction pad 25 axially outward of the disk toward the radially outward of the disk and toward the disk rotation side. The cushion spring 27 is a common member having the same shape as the cushion spring 26, and is mounted in a mirror-like manner on the bracket main body 29.

The friction pad 24 on the inner side in the disk axial direction shown in fig. 6 and the friction pad 25 on the outer side in the disk axial direction shown in fig. 1 are common members. As shown in fig. 6, the friction pad 24 on the inner side in the disk axial direction is supported on the carrier body 29 via pad springs 26, 27. The friction pad 24 has a mirror-like shape and has a back plate 91 supported on the carrier body 29 and a lining 92 in contact with the disc rotor 11. The back plate 91 has a main plate portion 101 and a pair of convex portions 102 protruding outward along the longitudinal direction of the main plate portion 101 from both end portions in the longitudinal direction of the main plate portion 101. The liner 92 is adhered to the main plate portion 101.

The friction pad 24 is disposed so that the liner 92 is positioned on the disc rotor 11 side with respect to the back plate 91. One convex portion 102 of the back plate 91 of the friction pad 24 is disposed in the support main body portion 60 of the inner pad support portion 31 via the guide portion 70 of the pad spring 26, and the other convex portion 102 of the back plate 91 is disposed in the support main body portion 61 of the inner pad support portion 32 via the guide portion 80 of the pad spring 27. Thereby, the friction pad 24 is provided at a lateral position on the inner side in the disk axial direction with respect to the disk rotor 11, and is supported by the bracket 21 so as to be movable in the disk axial direction.

The main plate portion 101 of the back plate 91 of the friction pad 24 is pressed outward in the disk radial direction by the radially urging portions 73, 83 of the pad springs 26, 27 that are in contact with each other. Here, the bracket 21 is forced from the main plate portion 101 of the friction pad 24 at the time of braking by the surfaces 31b, 32b abutting on the inner side in the disk radial direction with respect to the support body portions 60, 61. In other words, the surfaces 31b and 32b of the bracket 21 located on the inner side in the disk radial direction than the support body portions 60 and 61 are torque receiving surfaces. The surface 32b is a torque receiving surface when the vehicle is moving forward, and the surface 31b is a torque receiving surface when the vehicle is moving backward.

The friction pad 25 shown in fig. 1 on the outer side in the disk axial direction is supported via pad springs 26 and 27 on a pair of outer pad support portions 35 and 36 so as to be movable in the disk axial direction. As a result, the friction pad 25 on the outer side in the disk axial direction is provided at a position laterally outside in the disk axial direction with respect to the disk rotor 11, and is supported on the bracket 21 so as to be movable in the disk axial direction. Thus, the bracket 21 is mounted on a non-rotating portion of the vehicle, and has a pair of inner pad support portions 31, 32 and a pair of outer pad support portions 35, 36 that movably support the pair of friction pads 24, 25.

As shown in fig. 1 to 3, the caliper 22 has a substantially mirror-symmetrical shape. As shown in fig. 2, the brake caliper 22 includes a caliper body 131, a pair of slide pins 45, and a piston, which is not shown.

The caliper body 131 is integrally formed by casting. The caliper body 131 includes: a cylinder portion 141 disposed axially inward of the disc rotor 11; a bridge portion 142 extending outward in the disk axial direction along the disk axial direction so as to straddle the outer periphery of the disk rotor 11 from a portion outside in the disk radial direction of the cylinder portion 141; a claw portion 143 extending inward in the disk radial direction from an end edge portion of the bridge portion 142 on the opposite side to the cylinder portion 141 in the disk axial direction and disposed outward in the disk axial direction of the disk rotor 11; a pair of pin mounting portions 144 extending from the cylinder portion 141 to both sides in the disk circumferential direction. A cylinder hole for accommodating a piston, not shown, is formed in the cylinder portion 141 along the disk axial direction from the claw portion 143 side.

The caliper body 131 is provided with a slide pin 45 at a pin mounting portion 144 on one side in the disk circumferential direction, and the slide pin 45 is also provided at a pin mounting portion 144 on the other side in the disk circumferential direction. A pair of slide pins 45 on both sides in the disk circumferential direction of the caliper 22 are slidably fitted into a pair of pin insertion holes 43, 44 shown in fig. 5 and 6 of the bracket main body 29. Thereby, the brake caliper 22 is supported on the bracket main body 29 of the bracket 21 so as to be slidable in the disk axial direction. The pair of protection covers 23 shown in fig. 2 and 3 cover the portions of the corresponding slide pins 45 protruding from the bracket main body 29, respectively.

As shown in fig. 1, the claw portion 143 is provided with a plurality of grooves 151 recessed outward in the disk radial direction from the end edge portion on the inner side in the disk radial direction. The grooves 151 are provided at two places in particular. The grooves 151 are formed in the same shape, aligned with each other at positions in the disk axial direction and in the disk radial direction, and arranged in the disk circumferential direction. The one groove 151 is a portion through which a tool for machining one cylinder hole, not shown, of the cylinder portion 141 is inserted. The other groove 151 is a portion through which a tool for machining another cylinder hole, not shown, of the cylinder portion 141 is inserted.

The caliper body 131 has an outer peripheral end surface 142a facing the disc radial direction outside formed at the disc radial direction outside end of the bridge portion 142. The outer peripheral end surfaces 33d, 34d of the outer peripheral frame portions 33, 34 of the bracket 21 and the outer peripheral end surface 142a of the brake caliper 22 on the outer side in the disk radial direction are arranged substantially without steps in the disk radial direction.

A chamfer 142b is formed adjacent to the disk axial outer side of the outer peripheral end face 142a at the disk axial outer side end of the bridge 142. The chamfer 142b is disposed at the end of the brake caliper 22 radially outward of the disc and at the end of the brake caliper axially outward of the disc. The chamfer 142b faces radially outward of the disk and axially outward of the disk. The chamfer 142b is inclined so as to be located radially inward of the disk as it is located axially outward of the disk. The chamfer 142b of the bridge 142 is substantially aligned with the chamfers 33e, 34e of the outer peripheral frame portions 33, 34 of the bracket 21 at positions in the disk radial direction.

An outer surface 142c facing outward in the disk circumferential direction is formed at the disk-rotation-side end of the bridge portion 142. An outer surface 142d facing outward in the disk circumferential direction is formed at the disk-rotation-side end of the bridge portion 142.

One of the opposed surfaces 33a, 34a of the bracket 21 is opposed to one of the outer side surfaces 142c of the pair of outer side surfaces 142c, 142d of the caliper 22. One outer peripheral frame portion 33 of the bracket 21 including the one opposing surface 33a extends from the one opposing surface 33a in the disc circumferential direction in a direction away from the caliper 22 so as to cover the disc rotor 11 on the disc radial direction outer side. The other opposing surface 34a of the pair of opposing surfaces 33a, 34a of the bracket 21 opposes the other outer surface 142d of the pair of outer surfaces 142c, 142d of the caliper 22. The other peripheral frame portion 34 of the bracket 21 including the other opposing surface 34a extends from the other opposing surface 34a in the disc circumferential direction in a direction away from the caliper 22 so as to cover the disc rotor 11 on the disc radial direction outer side.

The outer peripheral frame portion 33 of the bracket 21 extends from the facing surface 33a toward the disk transfer side along the disk circumferential direction. The outer peripheral frame portion 33 extends to a position further inward in the disk radial direction than the surfaces 31b, 32b, 35b, 36b that are forced from the friction pads 24, 25 when braking the pair of inner pad supporting portions 31, 32 and the pair of outer pad supporting portions 35, 36. The outer peripheral frame 34 of the bracket 21 extends from the facing surface 34a toward the disk rotation-out side along the disk circumferential direction. The outer peripheral frame 34 extends to a position further inward in the disk radial direction than the surfaces 31b, 32b, 35b, 36b that are forced from the friction pads 24, 25 when braking the pair of inner pad supporting portions 31, 32 and the pair of outer pad supporting portions 35, 36.

As shown in fig. 2, in the bridge portion 142, a plurality of window holes 161 penetrating in the disk radial direction are aligned with each other at positions in the disk axial direction, and are formed so as to be separated from each other in the disk circumferential direction. The plurality of windows 161 are specifically formed at two positions. The window 161 is a hole for visually checking the wearing state of the friction pads 24, 25 on both sides in the disk axial direction from the outside.

In the bridge portion 142, a plurality of concave portions 162 recessed inward in the disk radial direction from the outer peripheral end face 142a are formed so as to be aligned with each other at positions in the disk axial direction and so as to be separated from each other in the disk circumferential direction. Specifically, the plurality of concave portions 162 are formed in two places. The recess 162 is formed further toward the disk axial outer side than the window 161. A recess 162 is aligned with a window 161 at a location circumferentially of the disk. The other recess 162 is aligned with the other window 161 at a position in the disk circumferential direction. The pair of concave portions 162 are portions that are supported by the working machine when the caliper body 131 is provided on the working machine.

An outer end surface 143a facing the outer side in the disc axial direction is formed at the outer end of the claw portion 143 in the disc axial direction in the brake caliper body 131. The outer end surface 143a is disposed at the end of the brake caliper 22 that is furthest outward in the disc axial direction. The outer end surface 143a is a plane extending perpendicularly to the disk axial direction.

In the disc brake 10 having the above-described configuration, brake fluid is introduced into the cylinder portion 141 of the caliper 22 through a brake pipe, not shown. Then, a piston, not shown, of the brake caliper 22 advances toward the disc rotor 11, and a friction pad 24 disposed between the piston and the disc rotor 11 and axially inside the disc is pressed toward the disc rotor 11. Thereby, the friction pad 24 axially inside the disk moves into contact with the disk rotor 11 at its liner 92. Further, by the reaction force of the pressing, the caliper body 131 slides the slide pin 45 with respect to the bracket 21 to move in the disc axial direction, and the claw portion 143 presses the friction pad 25 arranged on the outer side in the disc axial direction between the claw portion 143 and the disc rotor 11 toward the disc rotor 11. Thereby, the friction pad 25 on the axially outer side of the disk is in contact with the disk rotor 11 at the liner 92. In this way, the caliper 22 clamps the pair of friction pads 24, 25 from both sides in the disk axial direction and presses the pair of friction pads against both sides of the disk rotor 11. As a result, the brake caliper 22 applies frictional resistance to the disc rotor 11, and generates braking force. The brake caliper 22 is a floating brake caliper and is a fist-type brake caliper.

Here, at the time of braking, since the lining 92 of the friction pads 24, 25 is in contact with the disc rotor 11, the lining 92 is shaved or the disc rotor 11 is shaved, generating brake dust. When the vehicle is traveling forward, such brake dust is mainly discharged to the front side of the liner 92 in the rotational direction of the disc rotor 11, that is, the disc roll-out side, due to the rotation of the disc rotor 11. Then, the dust collection portion 191 of the filter portion 56 provided on the front side of the liner 92 in the rotation direction of the disc rotor 11, that is, on the disc rotation-out side, mainly captures the brake dust discharged in this way. Further, when the vehicle is traveling backward, brake dust is mainly discharged forward in the rotational direction of the disc rotor 11 than the liner 92 due to the rotation of the disc rotor 11. Then, the dust collection portion 191 of the filter portion 55 provided further toward the front in the rotational direction of the disc rotor 11 than the liner 92 mainly captures the brake dust discharged in this way.

The disc brake described in patent document 1 includes a disc brake in which another brake dust collector is provided in a lateral direction of a brake caliper. However, efficient recovery of brake dust is required.

In contrast, in the disc brake 10 of the first embodiment, the filter portions 55 and 56 are provided on the inner peripheral surface 21b of the bracket 21 supporting the friction pads 24 and 25, which is formed along the outer peripheral edge of the disc rotor 11, so as to face the outer peripheral edge of the disc rotor 11. Therefore, the brake dust can be recovered in the vicinity of the sliding surfaces of the friction pads 24, 25 and the disc rotor 11, which are very close to the generation source of the brake dust. Thus, brake dust can be efficiently recovered. Therefore, the release amount of brake dust into the air can be reduced. In other words, the brake dust can be collected in the brake caliper 22 and the bracket 21, which are sources of the brake dust, and the release amount of the brake dust into the air can be reduced.

The filter units 55 and 56 of the disc brake 10 according to the first embodiment are composed of the dust collection unit 191 and the mounting plate 192 for mounting the dust collection unit 191 to the bracket main body 29 of the bracket 21, and therefore the dust collection unit 191 can be configured to be detachable from the bracket main body 29.

Further, in the disk brake 10 of the first embodiment, since the mounting plates 192 are provided with the mounting portions 212, 213, 222, 223 for mounting on the bracket main body 29, the dust collection portion 191 can be configured to be detachable from the bracket main body 29.

The mounting plate 192 of the disc brake 10 according to the first embodiment includes: a positioning plate 193 that positions the dust collection portion 191 and is difficult to detach from the bracket main body 29; a clip plate portion 194 supporting the dust collection portion 191 and detachable with respect to the bracket main body 29; therefore, erroneous detachment of the positioning plate 193 can be suppressed.

Further, since the positioning plate portion 193 of the disc brake 10 according to the first embodiment is provided in the direction of the disc center axis with respect to the dust collecting portion 191, the dust collecting portion 191 can be positioned in the disc radial direction by the positioning plate portion 193.

Further, since the clip plate portion 194 of the disc brake 10 according to the first embodiment is provided laterally in the disc circumferential direction with respect to the dust collection portion 191, the dust collection portion 191 can be removed from the carrier body 29 and the positioning plate portion 193 by removing the clip plate portion 194 from the carrier body 29.

Further, since the dust collecting portions 191 of the filter units 55 and 56 of the disc brake 10 according to the first embodiment are provided on both the disc-in side and the disc-out side of the bracket 21, brake dust generated when the vehicle is moving forward and brake dust generated when the vehicle is moving backward can be efficiently collected. Since brake dust generated when the vehicle moves forward is larger than brake dust generated when the vehicle moves backward, when the filter unit is provided on one of the disk transfer side and the disk transfer side of the bracket 21, the filter unit 56 on the disk transfer side is preferably provided. That is, at least the filter portion 56 on the disk transfer side is provided on the disk transfer side and the disk transfer side of the tray 21.

Further, since the filter portions 55 and 56 of the disc brake 10 of the first embodiment are made of an elastic body, the attachment to the bracket main body 29 is easy.

First modification example

In the disc brake 10 of the first embodiment, the positioning plate 193A shown in fig. 26 to 28 may be provided instead of the positioning plate 193. The positioning plate 193A has a curved plate 211A partially different from the curved plate 211. The curved plate portion 211A differs from the curved plate portion 211 in that a plurality of circular hole-like holes 251A penetrating the curved plate portion 211A in the plate thickness direction (radial direction) are formed in an orderly arrangement. Accordingly, the curved plate portion 211A has an inner curved surface portion 211Aa and an outer curved surface portion 211Ab, the inner curved surface portion 211Aa differs from the inner curved surface portion 211A in that the plurality of holes 251A are open, and the outer curved surface portion 211Ab differs from the outer curved surface portion 211b in that the plurality of holes 251A are open. The positioning plate 193A is so-called punched metal. When such positioning plate 193A is used, air containing brake dust can be satisfactorily flowed into the dust collection unit 191 through the plurality of holes 251A, and therefore brake dust can be more efficiently collected by the dust collection unit 191.

In the disc brake 10 according to the first embodiment, the clip plate 194A shown in fig. 29 and 30 may be provided instead of the clip plate 194. The clip plate portion 194A has a substrate portion 221A that is partially different from the substrate portion 221. The substrate 221A differs from the substrate 221 in that a plurality of circular holes 252A penetrating the substrate 221A in the plate thickness direction are formed in an aligned state. The clip plate portion 194A is so-called punched metal. If such a clip plate portion 194A is used, air containing brake dust can be satisfactorily flowed to the dust collection portion 191 through the plurality of holes 252A, and therefore brake dust can be more efficiently collected by the dust collection portion 191.

Second modification example

In the disc brake 10 of the first embodiment, the positioning plate 193B shown in fig. 31 to 33 may be provided instead of the positioning plate 193. The positioning plate portion 193B has a curved plate portion 211B partially different from the curved plate portion 211. The curved plate portion 211B differs from the curved plate portion 211 in that a plurality of square hole-like holes 251B penetrating the curved plate portion 211B in the plate thickness direction (radial direction) are formed in an orderly arrangement. Therefore, the curved plate portion 211B has an inner curved surface portion 211Ba and an outer curved surface portion 211Bb, the inner curved surface portion 211Ba differs from the inner curved surface portion 211a in that the plurality of holes 251B are open, and the outer curved surface portion 211Bb differs from the outer curved surface portion 211B in that the plurality of holes 251B are open. The positioning plate 193B is a so-called mesh metal. When such positioning plate 193B is used, air containing brake dust can be satisfactorily flowed to the dust collection portion 191 through the plurality of holes 251B, and therefore brake dust can be more efficiently collected by the dust collection portion 191.

In the disc brake 10 according to the first embodiment, the clip plate 194B shown in fig. 34 and 35 may be provided instead of the clip plate 194. The clip plate portion 194B has a substrate portion 221B that is partially different from the substrate portion 221. The substrate 221B differs from the substrate 221 in that a plurality of square holes 252B penetrating the substrate 221B in the plate thickness direction are provided in an aligned state. The clip plate portion 194B is a so-called mesh metal. If such a clip plate portion 194B is used, air containing brake dust can be satisfactorily flowed to the dust collection portion 191 through the hole 252B, and therefore brake dust can be more efficiently collected by the dust collection portion 191.

Second embodiment

The second embodiment will be described mainly with reference to fig. 36 to 64, which mainly focus on differences from the first embodiment. The parts common to the first embodiment are denoted by the same reference numerals.

As shown in fig. 36 to 45, the disc brake 10D according to the second embodiment includes a bracket 21D partially different from the bracket 21 according to the first embodiment. The bracket 21D has a bracket main body 29D partially different from the bracket main body 29, and as shown in fig. 41 to 44, has a pair of filter parts 55D, 56D partially different from the filter parts 55, 56.

The bracket main body 29D has a shape shown in fig. 46 to 50. As shown in fig. 46, 47, 49 and 50, the bracket main body 29D has a pair of outer peripheral frame portions 33D, 34D, and the pair of outer peripheral frame portions 33D, 34D are different from the pair of outer peripheral frame portions 33, 34 in that they have a long shape in the disk circumferential direction. As shown in fig. 47 and 49, the tray main body 29D includes a pair of inner pad support portions 31D and 32D, and the pair of inner pad support portions 31D and 32D are different from the pair of inner pad support portions 31 and 32 in that they have a longer shape in the disk circumferential direction. As shown in fig. 46, 47, and 50, the tray main body 29D has a pair of outer pad support portions 35D, 36D, and the pair of outer pad support portions 35D, 36D are different from the pair of outer pad support portions 35, 36 in that they have a long shape in the disk circumferential direction. As shown in fig. 46 and 47, the bracket main body 29D has a linking beam portion 37D having a different shape from the linking beam portion 37. The tray main body 29D is also a mirror-symmetrical shape with respect to the center in the disk circumferential direction.

As shown in fig. 46, the outer peripheral frame portion 33D has an outer peripheral end surface 33Dd, and the outer peripheral end surface 33Dd differs from the outer peripheral end surface 33D in that it is long in the disk circumferential direction. The outer peripheral frame portion 33D has a chamfer 33De, and the chamfer 33De differs from the chamfer 33e in that it is long in the disk circumferential direction. The outer peripheral frame portion 33D has an inner peripheral end surface 33Df, and the inner peripheral end surface 33Df differs from the inner peripheral end surface 33f in that it is long in the disk circumferential direction. The outer peripheral frame portion 33D has an outer end surface 33Dh, and the outer end surface 33Dh differs from the outer end surface 33h in that it is long in the disk circumferential direction. As shown in fig. 49 and 50, the outer peripheral frame portion 33D has an inner peripheral contact surface 33Dk, and the inner peripheral contact surface 33Dk differs from the inner peripheral contact surface 33k in that it is long in the disk circumferential direction. The outer peripheral frame portion 33D has a disk transfer portion 57D, and the disk transfer portion 57D differs from the disk transfer portion 57 in that it is long in the disk circumferential direction. The outer peripheral frame portion 33D has a peripheral end face 33Dm different from the peripheral end face 33 m. The circumferential end face 33Dm is farther from the outer opposing face portion 33b in the disk circumferential direction than the circumferential end face 33 m.

In the outer peripheral frame portion 33D, a hole 301D penetrating the outer peripheral frame portion 33D along a disk radial reference line is formed between the outer pad support portion 35D and the inner pad support portion 31D. One end of the hole 301D opens at the outer peripheral end surface 33Dd, and the other end opens at the inner peripheral abutment surface 33 Dk.

As shown in fig. 46, the outer peripheral frame portion 34D has an outer peripheral end surface 34Dd, and the outer peripheral end surface 34Dd differs from the outer peripheral end surface 34D in that it is long in the disk circumferential direction. The outer peripheral frame portion 34D has a chamfer 34De, and the chamfer 34De differs from the chamfer 34e in that it is long in the disk circumferential direction. The outer peripheral frame portion 34D has an inner peripheral end surface 34Df, and the inner peripheral end surface 34Df differs from the inner peripheral end surface 34f in that it is long in the disk circumferential direction. The outer peripheral frame portion 34D has an outer end surface 34Dh, and the outer end surface 34Dh differs from the outer end surface 34h in that it is long in the disk circumferential direction. As shown in fig. 49 and 50, the outer peripheral frame portion 34D has an inner peripheral contact surface 34Dk, and the inner peripheral contact surface 34Dk differs from the inner peripheral contact surface 34k in that it is long in the disk circumferential direction. The outer peripheral frame portion 34D has a disk transfer portion 58D, and the disk transfer portion 58D differs from the disk transfer portion 58 in that it is long in the disk circumferential direction. The outer peripheral frame portion 34D has a peripheral end face 34Dm different from the peripheral end face 34 m. The circumferential end surface 34Dm is farther from the outer opposing surface portion 34b than the circumferential end surface 34m in the disk circumferential direction.

In the outer peripheral frame portion 34D, a hole 302D penetrating the outer peripheral frame portion 34D along a disk radial reference line is formed between the outer pad support portion 36D and the inner pad support portion 32D. One end of the hole 302D opens at the outer peripheral end surface 34Dd, and the other end opens at the inner peripheral abutment surface 34 Dk.

As shown in fig. 46 and 47, the outer pad support portion 35D has an outer end surface 35Dc, and the outer end surface 35Dc differs from the outer end surface 35c in that it is long in the disk circumferential direction. As shown in fig. 50, the outer pad support portion 35D has an inward abutment surface 35Dh, and the inward abutment surface 35Dh differs from the inward abutment surface 35h in that it is long in the disk circumferential direction. The outer pad support portion 35D has a face portion 35Di different from the face portion 35 i. The face portion 35Di is inclined so as to be located further toward the disk radial direction inside in the direction of the disk radial reference line than toward the disk circumferential direction outside. The outer pad support portion 35D has second engagement holes 172D formed therein at different positions and angles with respect to the second engagement holes 172. The second engagement hole 172D is formed near the end of the inward contact surface 35Dh on the opposite side of the outer pad support portion 36D in the disk circumferential direction, and is long in the direction orthogonal to the disk radial reference line.

As shown in fig. 46 and 47, the outer pad support portion 36D has an outer end surface 36Dc, and the outer end surface 36Dc differs from the outer end surface 36c in that it is long in the disk circumferential direction. As shown in fig. 50, the outer pad support portion 36D has an inward abutment surface 36Dh, and the inward abutment surface 36Dh differs from the inward abutment surface 36h in that it is long in the disk circumferential direction. The outer pad support portion 36D has a face portion 36Di different from the face portion 36 i. The face 36Di is inclined so as to be located further toward the disk radial direction inside in the direction of the disk radial reference line than toward the disk circumferential direction outside. The outer pad support portion 36D has a second engagement hole 174D formed therein at a different position and angle from the second engagement hole 174. The second engagement hole 174D is formed near the end of the inward contact surface 36Dh on the opposite side of the outer pad support portion 35D in the disk circumferential direction, and is long in the direction orthogonal to the disk radial reference line.

As shown in fig. 46, the coupling beam portion 37D is curved in an arc shape so as to be located further toward the disk radial inner side in the disk radial reference line direction as it is further from the disk circumferential center. The connecting beam portion 37D has an outward end surface 37Da different from the outward end surface 37a, an inward end surface 37Db different from the inward end surface 37b, and an outward end surface 37Dc different from the outward end surface 37 c. The outward end surface 37Da has a shape of a part of a cylindrical surface, and the inward end surface 37Db has a shape of a part of a cylindrical surface. The outer end surface 37Dc is arcuate. Therefore, the end portions of the tray 21D and the tray main body 29D on the outer side in the disk axial direction have outer end surfaces 21Da having different shapes from the outer end surfaces 21 a.

As shown in fig. 49, the inner pad support portion 31D has an outward abutment surface 31Dh, and the outward abutment surface 31Dh differs from the outward abutment surface 31h in that it is long in the disk circumferential direction. The inner pad support portion 31D has a face portion 31Di different from the face portion 31 i. The face 31Di is inclined so as to be located further toward the disk radial direction inside in the direction of the disk radial reference line than toward the disk circumferential direction outside. The inner pad support portion 31D has second engaging holes 182D formed therein at different positions and angles with respect to the second engaging holes 182. The second engagement hole 182D is formed near the end of the outward contact surface 31Dh on the opposite side of the inner pad support portion 32D in the disk circumferential direction, and is long in the direction orthogonal to the disk radial reference line. The second engagement hole 182D is aligned with the second engagement hole 172D in positions in the disk radial direction and the disk circumferential direction, and is opposed in the disk axial direction.

The inner pad support portion 32D has an outward abutment surface 32Dh, and the outward abutment surface 32Dh differs from the outward abutment surface 32h in that it is long in the disk circumferential direction. The inner pad support portion 32D has a face portion 32Di different from the face portion 32 i. The face portion 32Di is inclined so as to be located further toward the disk radial direction inside in the direction of the disk radial reference line than toward the disk circumferential direction outside. The inner pad support portion 32D has second engagement holes 184D formed therein at different positions and angles with respect to the second engagement holes 184. The second engagement hole 184D is formed near the end of the outward contact surface 32Dh on the opposite side of the inner pad support portion 31D in the disk circumferential direction, and is long in the direction orthogonal to the disk radial reference line. The second engagement hole 184D is aligned with the second engagement hole 174D in positions in the disk radial direction and the disk circumferential direction, and is opposed in the disk axial direction.

The filter units 55D and 56D shown in fig. 42 to 44 are also common members, and are arranged in mirror symmetry on the bracket main body 29D. The filter units 55D and 56D are each composed of a dust collecting unit 191D partially different from the dust collecting unit 191 and an attachment plate 192D partially different from the attachment plate 192. The mounting plate 192D has a positioning plate portion 193D that is partially different from the positioning plate portion 193, and is composed of the positioning plate portion 193D and the clip plate portion 194.

As shown in fig. 51 to 53, the dust collection portion 191D has a curved portion 204D, and the curved portion 204D differs from the curved portion 204 in that the length in the circumferential direction is long. The curved portion 204D has an inner curved surface portion 204Da, and the inner curved surface portion 204Da differs from the inner curved surface portion 204a in that the length in the circumferential direction is long. The curved portion 204D has an outer curved surface portion 204Db, and the outer curved surface portion 204Db differs from the outer curved surface portion 204b in that the length in the circumferential direction is long. The dust collection portion 191D has a face 204Dc different from the face 204 c. The face 204Dc is farther from the protrusion 205 than the face 204 c.

The dust collection portion 191D has a side plate portion 202D, and the side plate portion 202D differs from the side plate portion 202 in that the length extending to the opposite side of the protruding portion 205 is long. The side plate portion 202D has an outer surface portion 202Da, and the outer surface portion 202Da differs from the outer surface portion 202a in that the length extending to the opposite side from the protruding portion 205 is long. The side plate portion 202D has an inner surface portion 202Db, and the inner surface portion 202Db differs from the inner surface portion 202b in that the length extending to the opposite side from the protruding portion 205 is long. The side plate portion 202D has a face portion 202Dd, and the face portion 202Dd differs from the face portion 202D in that the length extending to the opposite side from the protruding portion 205 is long. The side plate portion 202D has a face 202De different from the face 202 e. The face 204Dc side of the face 202De is coplanar with the face 204Dc, and is inclined with respect to the face 204Dc so as to approach the protrusion 205 as approaching the inner face 202Db side. The side plate portion 202D has an inclined surface portion 202Dc different from the inclined surface portion 202 c. The width of the inclined surface portion 202Dc in the direction connecting the outer surface portion 202Da and the surface portion 202De is narrower toward the surface portion 202 Dd.

The dust collection portion 191D has a side plate portion 203D, and the side plate portion 203D differs from the side plate portion 203 in that the length extending to the opposite side of the protruding portion 205 is long. The side plate portion 203D has an outer surface portion 203Da, and the outer surface portion 203Da differs from the outer surface portion 203a in that the length extending to the opposite side of the protruding portion 205 is long. The side plate portion 203D has an inner surface portion 203Db, and the inner surface portion 203Db differs from the inner surface portion 203b in that a length extending to the opposite side of the protruding portion 205 is longer. The side plate portion 203D has a face portion 203Dd, and the face portion 203Dd differs from the face portion 203D in that the length extending to the opposite side from the protruding portion 205 is long. The side plate portion 203D has a face 203De different from the face 203 e. The face 204Dc side of the face 203De is coplanar with the face 204Dc, and is inclined with respect to the face 204Dc so as to approach the protrusion 205 as approaching the inner face 203Db side. The side plate portion 203D has an inclined surface portion 203Dc different from the inclined surface portion 203 c. The width of the inclined surface portion 203Dc in the direction connecting the outer surface portion 203Da and the surface portion 203De is narrower toward the surface portion 203 Dd.

As shown in fig. 54 to 56, the positioning plate portion 193D has a curved plate portion 211D, and the curved plate portion 211D differs from the curved plate portion 211 in that the length in the circumferential direction is long. The curved plate portion 211D has an inner curved surface portion 211Da, and the inner curved surface portion 211Da differs from the inner curved surface portion 211a in that the length in the circumferential direction is long. The curved plate portion 211D has an outer curved surface portion 211Db, and the outer curved surface portion 211Db differs from the outer curved surface portion 211b in that the length in the circumferential direction is long.

As shown in fig. 43, when the filter portion 55D is mounted on the bracket main body 29D, the dust collecting portion 191D thereof abuts with the outward abutment surface 31Dh of the inner pad support portion 31D at the outer surface portion 202Da in surface contact, and abuts with the large step surface 31g at the surface portion 202Dd in surface contact. The dust collection portion 191D of the filter portion 55D is in contact with the inward contact surface 35Dh of the outer pad support portion 35D at the outer surface portion 203Da, and is in contact with the large step surface 35g at the surface portion 203 Dd. As shown in fig. 44, the dust collection portion 191D of the filter portion 55D is in contact with the inner peripheral contact surface 33Dk of the outer peripheral frame portion 33D at the outer curved surface portion 204Db, and in contact with the inner flat surface 33i at the top surface portion 205 a. At this time, the curved portion 204D of the dust collection portion 191D covers the entire hole 301D on the inner side in the disk radial direction at the outer curved surface portion 204 Db. In other words, the bracket body 29D is provided with a hole 301D at the position of the filter unit 55D to expose the dust collecting unit 191D of the filter unit 55D to the outside in the disk radial direction.

The filter unit 55D brings the dust collection unit 191D into a state in which the positioning plate 193D is in surface contact with the inner curved surface 204Da of the dust collection unit 191D at the outer curved surface 211Db of the curved plate 211D. The mounting portion 212 of the positioning plate portion 193D engages with the first engagement hole 181 of the inner pad support portion 31D, and the mounting portion 213 engages with the first engagement hole 171 of the outer pad support portion 35D. Then, the positioning plate 193D is disposed in the direction of the disk center axis with respect to the dust collection portion 191D. In this state, the positioning plate 193D presses the curved portion 204D of the dust collection portion 191D against the outer peripheral frame portion 33D so as to be in surface contact with the inner peripheral contact surface 33Dk at the outer curved surface portion 204 Db.

The positioning plate 193D positions the dust collection unit 191D with respect to the bracket main body 29D. As shown in fig. 43, the dust collection portion 191D positioned by the positioning plate 193D is in contact with the outward contact surface 31Dh at the outer surface 202Da, is in contact with the inward contact surface 35Dh at the outer surface 203Da, and is in contact with the inner peripheral contact surface 33Dk at the outer curved surface 204Db, as shown in fig. 44. In this case, similarly, the positioning plate portion 193D is in a state in which the flat plate-like attachment portions 212, 213 extend obliquely from the curved plate portion 211D to the disk radial direction inner side so that the tip portions are separated from each other, and enter the first engagement holes 181, 171 at the tip portions, and therefore, is in a state in which it is difficult to detach from the bracket main body 29D.

The disc-turning-side filter unit 55D brings the dust collection unit 191D into the above-described positioning state, and as shown in fig. 44, the clip plate portion 194 is brought into contact with the face 204Dc of the dust collection unit 191D at the base plate portion 221, and the mounting portion 222 is engaged with the second engaging hole 182D of the inner pad support portion 31D, and the mounting portion 223 is engaged with the second engaging hole 172D of the outer pad support portion 35D. The clip plate 194 is disposed laterally in the disk circumferential direction with respect to the dust collection portion 191D, specifically, on the disk rotation-in side. In this state, the clip plate portion 194 presses the dust collection portion 191D against the outer peripheral frame portion 33D so as to be in surface contact with the inner flat surface 33i at the top surface portion 205 a. Thereby, the clip plate portion 194 restricts movement of the dust collection portion 191D in the disk circumferential direction in a state of being positioned on the carrier body 29D by the positioning plate portion 193D by the inner flat surface 33 i.

The filter unit 56D on the disc feed side is attached to the holder main body 29D in a mirror-symmetrical manner to the filter unit 55D, as in the filter unit 55D. Then, as shown in fig. 43, the dust collection portion 191D of the filter portion 56D is abutted with the inward abutment surface 36Dh of the outer pad support portion 36D at the outer surface portion 202Da in surface contact, and is abutted with the large step surface 36g at the surface portion 202Dd in surface contact. The dust collection portion 191D of the filter portion 56D is in contact with the outward contact surface 32Dh of the inner pad support portion 32D at the outer surface portion 203Da, and is in contact with the large step surface 32g at the surface portion 203 Dd. As shown in fig. 44, the dust collection portion 191D of the filter portion 56D is in contact with the inner peripheral contact surface 34Dk of the outer peripheral frame portion 34D at the outer curved surface portion 204Db, and in contact with the inner flat surface 34i at the top surface portion 205 a. At this time, the curved portion 204D of the dust collection portion 191D covers the entire hole 302D at the outer curved surface portion 204Db on the inner side in the disk radial direction. In other words, the bracket body 29D is provided with a hole 302D at the position of the filter unit 56D to expose the dust collecting portion 191D of the filter unit 56D to the outside in the disk radial direction.

As shown in fig. 57, the positioning plate 193D of the filter unit 56D is engaged with the first engagement hole 173 of the outer pad support 36D at the mounting portion 212, and is engaged with the first engagement hole 183 of the inner pad support 32D at the mounting portion 213. Thus, the positioning plate 193D of the filter unit 56D positions the dust collection unit 191D in the above state.

As shown in fig. 58, the clip plate 194 of the filter 56D engages with the second engagement hole 174D of the outer pad support 36D at the mounting portion 222, and engages with the second engagement hole 184D of the inner pad support 32D at the mounting portion 223. Thereby, the clip plate 194 of the filter unit 56D supports the dust collection unit 191D so as to maintain the above-described state.

The bracket 21D having the filter unit 55D and the filter unit 56D attached to the bracket body 29D has an inner peripheral surface 21Db having the structure shown in fig. 43. The inner peripheral surface 21Db is constituted by inner peripheral end surfaces 33g, 34g and inner flat surfaces 33i, 34i on the inner side in the disk radial direction of the outer peripheral frame portions 33D, 34D of the bracket main body 29D, an inner curved surface portion 204Da on the inner side in the disk radial direction of the curved portion 204D of the dust collecting portion 191D of the filter portion 55D, an inner curved surface portion 211Da on the inner side in the disk radial direction of the curved plate portion 211D of the positioning plate portion 193D of the filter portion 55D, an inner curved surface portion 204Da on the inner side in the disk radial direction of the curved portion 204D of the dust collecting portion 191D of the filter portion 56D, and an inner curved surface portion 211Da on the inner side in the disk radial direction of the curved plate portion 211D of the positioning plate portion 193D of the filter portion 56D. As shown in fig. 40, the inner peripheral surface 21Db is formed along the outer peripheral edge of the disk radial direction outer side of the disk rotor 11.

The filter portion 55D and the filter portion 56D located on the inner peripheral surface 21Db of the bracket 21D are provided facing the outer peripheral edge of the disc rotor 11. In other words, the bracket 21D includes an inner peripheral surface 21Db formed along the outer peripheral edge of the disc rotor 11, and filter portions 55D, 56D provided on the inner peripheral surface 21Db and facing the outer peripheral edge of the disc rotor 11. The filter unit 55D and the filter unit 56D are provided on both the disk transfer side and the disk transfer side of the tray 21D, and thus the dust collection unit 191D of the filter unit 55D and the dust collection unit 191D of the filter unit 56D are also provided on both the disk transfer side and the disk transfer side of the tray 21D.

When the vehicle is traveling forward, the disc brake 10D mainly captures brake dust generated during braking by the dust collection portion 191D of the filter portion 56D provided on the front side of the liner 92 in the rotational direction of the disc rotor 11, that is, on the disc roll-out side. In addition, during the backward travel of the vehicle, the dust collection portion 191D of the filter portion 55D provided further toward the front in the rotational direction of the disc rotor 11 than the liner 92 mainly captures brake dust.

Since the holes 301D and 302D are formed in the bracket body 29D of the bracket 21D in the disc brake 10D according to the second embodiment, air flows from the inner side to the outer side in the disc radial direction through the filter portion 55D and the hole 301D in the bracket 21D, and air flows from the inner side to the outer side in the disc radial direction through the filter portion 56D and the hole 302D. Therefore, the flow rate of the air passing through the filter unit 55D and the filter unit 56D can be increased by the flow of the air, and therefore, the air containing brake dust generated during braking can be caused to flow from the liner 92 and the disc rotor 11 to the dust collection unit 191D of the filter unit 55D and the dust collection unit 191D of the filter unit 56D more. Thus, brake dust can be recovered more efficiently.

In addition, since the holes 301D and 302D are formed in the bracket body 29D in the disc brake 10D according to the second embodiment, an increase in weight of the bracket body 29D can be suppressed.

First modification example

In the disc brake 10D according to the second embodiment, a positioning plate 193E shown in fig. 59 to 61 may be provided instead of the positioning plate 193D. The positioning plate 193E has a curved plate 211E partially different from the curved plate 211D. The curved plate portion 211E differs from the curved plate portion 211D in that a plurality of circular hole-like holes 251E penetrating the curved plate portion 211E in the plate thickness direction (radial direction) are formed in an orderly arrangement. Therefore, the curved plate portion 211E has an inner curved surface portion 211Ea and an outer curved surface portion 211Eb, the inner curved surface portion 211Ea differs from the inner curved surface portion 211Da in that the plurality of holes 251E are opened, and the outer curved surface portion 211Eb differs from the outer curved surface portion 211Db in that the plurality of holes 251E are opened. When such positioning plate 193E is used, air containing brake dust can be satisfactorily flowed into the dust collection portion 191D through the plurality of holes 251E, and therefore brake dust can be more efficiently collected by the dust collection portion 191D.

In the disc brake 10D according to the second embodiment, a clip plate 194A may be provided instead of the clip plate 194. If the clip plate 194A is used, air containing brake dust can be caused to flow well to the dust collection portion 191D via the plurality of holes 252A, and therefore brake dust can be recovered more efficiently by the dust collection portion 191D.

Second modification example

In the disc brake 10D according to the second embodiment, a positioning plate 193F shown in fig. 62 to 64 may be provided instead of the positioning plate 193D. The positioning plate portion 193F has a curved plate portion 211F that is partially different from the curved plate portion 211D. The curved plate portion 211F differs from the curved plate portion 211D in that a plurality of square hole-like holes 251F penetrating the curved plate portion 211F in the plate thickness direction (radial direction) are formed in an orderly arrangement. Therefore, the curved plate portion 211F has an inner curved surface portion 211Fa and an outer curved surface portion 211Fb, the inner curved surface portion 211Fa differs from the inner curved surface portion 211Da in that a plurality of holes 251F are opened, and the outer curved surface portion 211Fb differs from the outer curved surface portion 211Db in that a plurality of holes 251F are opened. When such positioning plate 193F is used, air containing brake dust can be satisfactorily flowed to the dust collection portion 191D through the plurality of holes 251F, and therefore brake dust can be more efficiently collected by the dust collection portion 191D.

In the disc brake 10D according to the second embodiment, the clip plate 194B may be provided instead of the clip plate 194. If the clip plate 194B is used, air containing brake dust can be caused to flow well to the dust collection portion 191D via the hole 252B, and therefore brake dust can be collected more efficiently by the dust collection portion 191D.

Third embodiment

The third embodiment will be described mainly with reference to fig. 65 to 84, which mainly focus on differences from the second embodiment. The parts common to the second embodiment are denoted by the same reference numerals.

As shown in fig. 65 to 70, the disc brake 10H according to the third embodiment includes a bracket 21H partially different from the bracket 21D according to the second embodiment. As shown in fig. 69 to 75, the bracket 21H has a filter portion 55H partially different from the filter portions 55D and 56D.

As shown in fig. 69 to 73, the filter unit 55H is composed of a pair of dust collecting units 191H as common members partially different from the dust collecting units 191D, and an attachment plate 192H partially different from the attachment plate 192. The mounting plate 192H has a positioning plate portion 193H partially different from the positioning plate portion 193D, and is composed of a positioning plate portion 193H and a pair of sandwiching plate portions 194.

As shown in fig. 76 to 78, the dust collection portion 191H differs from the dust collection portion 191D in that it has an extension portion 401H extending from the protrusion portion 205 of the curved portion 204D in the circumferential direction of the curved portion 204D in a direction opposite to the face portion 204 Dc. The extension portion 401H has a shape of a part of a cylinder, and an inner curved surface portion 401Ha on the radially inner side thereof and an inner curved surface portion 204Da of the curved portion 204D are disposed on the same cylinder surface and are continuous. The radial thickness of the extension portion 401H is thinner than the curved portion 204D. The radially outer curved surface portion 401Hb of the extension portion 401H has a shape of a part of a cylinder coaxial with the inner curved surface portions 204Da, 401 Ha.

As shown in fig. 79 and 80, the positioning plate portion 193H has a curved plate portion 211H, and the curved plate portion 211H differs from the curved plate portion 211D in that the length in the circumferential direction is long. The curved plate portion 211H is also curved so as to take a part of the shape of a cylinder. Therefore, the curved plate portion 211H has an inner curved surface portion 211Ha, and the inner curved surface portion 211Ha differs from the inner curved surface portion 211Da in that the length in the circumferential direction is long. The curved plate portion 211H has an outer curved surface portion 211Hb, and the outer curved surface portion 211Hb differs from the outer curved surface portion 211Db in that the length in the circumferential direction is long. The positioning plate portion 193H has: a pair of flat plate-shaped mounting portions 412H, 413H protruding outward in the axial direction of the curved plate portion 211H from both end edge portions in the axial direction of the curved plate portion 211H on one end side in the circumferential direction of the curved plate portion 211H, the pair of flat plate-shaped mounting portions being identical to the mounting portions 222, 223; a pair of flat plate-shaped mounting portions 414H, 415H protruding outward in the axial direction of the curved plate portion 211H from both end edge portions in the axial direction of the curved plate portion 211H on the other end side in the circumferential direction of the curved plate portion 211H, which are identical to the mounting portions 222, 223. The mounting portions 412H to 415H extend radially inward of the curved plate portion 211H.

As shown in fig. 72, when the filter portion 55H is mounted on the tray main body 29D, one dust collection portion 191H disposed on the disk rotation side is abutted with the outward abutment surface 31Dh of the inner pad support portion 31D on the disk rotation side at the outer surface portion 202Da in surface contact, and is abutted with the large step surface 31g at the surface portion 202Dd in surface contact. The one dust collection portion 191H is in contact with the inward contact surface 35Dh of the outer pad support portion 35D on the disc rotation side at the outer surface portion 203Da, and in contact with the large step surface 35g at the surface portion 203 Dd. As shown in fig. 73, the one dust collection portion 191H is in contact with the inner peripheral contact surface 33Dk of the outer peripheral frame portion 33D with a surface contact at the outer curved surface portion 204Db, and in contact with the inner flat surface 33i with a surface contact at the top surface portion 205 a. At this time, the curved portion 204D of the one dust collection portion 191H covers the entire hole 301D at the outer curved surface portion 204Db on the inner side in the disk radial direction. At this time, the extension portion 401H of the one dust collection portion 191H extends from the protrusion 205 toward the disk rotation-out side along the disk circumferential direction.

As shown in fig. 72, the other dust collection portion 191H of the filter portion 55H mounted on the tray main body 29D, which is disposed on the tray-out side, is in surface contact with the inward abutment surface 36Dh of the outer pad support portion 36D at the outer surface portion 202Da, and is in surface contact with the large step surface 36g at the surface portion 202 Dd. The other dust collection portion 191H is in contact with the outward contact surface 32Dh of the inner pad support portion 32D at the outer surface portion 203Da, and in contact with the large step surface 32g at the surface portion 203 Dd. As shown in fig. 73, the other dust collection portion 191H is in contact with the inner peripheral contact surface 34Dk of the outer peripheral frame portion 34D with surface contact at the outer curved surface portion 204Db, and in contact with the inner flat surface 34i with surface contact at the top surface portion 205 a. At this time, the curved portion 204D of the other dust collection portion 191H covers the entirety of the hole 302D at the outer curved surface portion 204Db on the inner side in the disk radial direction. At this time, the extension portion 401H of the other dust collecting portion 191H extends from the protrusion 205 toward the disk rotation side along the disk circumferential direction, and is in contact with the extension portion 401H of the dust collecting portion 191H on the disk rotation side, and is continuous with the extension portion 401H in the disk circumferential direction.

The filter unit 55H brings the pair of dust collection units 191H into a state in which the positioning plate 193H is in surface contact with the inner curved surface 204Da and the inner curved surface 401Ha of both of the pair of dust collection units 191H at the outer curved surface 211Hb of the curved plate 211H. The mounting portion 413H of the positioning plate portion 193H engages with the first engagement hole 181 of the inner pad support portion 31D, the mounting portion 412H engages with the first engagement hole 171 (see fig. 50) of the outer pad support portion 35D, the mounting portion 414H engages with the first engagement hole 183 of the inner pad support portion 32D, and the mounting portion 415H engages with the first engagement hole 173 (see fig. 50) of the outer pad support portion 36D. Then, the positioning plate 193H is disposed in the direction of the disk center axis with respect to the pair of dust collecting parts 191H. In this state, the positioning plate 193H presses the bent portion 204D of one dust collection portion 191H against the outer peripheral frame portion 33D so as to be in surface contact with the inner peripheral contact surface 33Dk at the outer curved surface portion 204Db, and presses the bent portion 204D of the other dust collection portion 191H against the outer peripheral frame portion 34D so as to be in surface contact with the inner peripheral contact surface 34Dk at the outer curved surface portion 204 Db.

The positioning plate 193H positions the disc-transfer-side dust collection portion 191D with respect to the tray main body 29D. As shown in fig. 72, the dust collection portion 191D on the disc rotation side positioned by the positioning plate 193H is in contact with the outward contact surface 31Dh at the outer surface 202Da, is in contact with the inward contact surface 35Dh at the outer surface 203Da, and is in contact with the inner peripheral contact surface 33Dk at the outer curved surface 204Db, as shown in fig. 73. The positioning plate 193H positions the disc-rotating-out dust collection portion 191D with respect to the tray main body 29D. As shown in fig. 72, the dust collection portion 191D on the disc rotation-out side positioned by the positioning plate 193H is in contact with the inward contact surface 36Dh at the outer surface 202Da, is in contact with the outward contact surface 32Dh at the outer surface 203Da, and is in contact with the inner peripheral contact surface 34Dk at the outer curved surface 204Db, as shown in fig. 73. At this time, the positioning plate 193H is in the following state: the flat plate-shaped mounting portions 412H to 415H extend radially inward of the disk from the curved plate portion 211H, and extend obliquely to each other in the mounting portions 412H, 413H and the mounting portions 414H, 415H so that the tip portions are separated from each other. The mounting portions 412H to 415H enter the first engagement holes 171, 181, 183, 173 at the respective tip portions. Therefore, the bracket body 29D is difficult to be detached.

The filter unit 55H is positioned as described above by the pair of dust collecting units 191H by the single positioning plate 193H, and the single clip plate 194 is in contact with the surface 204Dc of the dust collecting unit 191H on the disc transfer side at the base plate 221. As shown in fig. 71, the mounting portion 222 of the clip plate portion 194 engages with the second engagement hole 182D of the inner pad support portion 31D, and the mounting portion 223 engages with the second engagement hole 172D (see fig. 50) of the outer pad support portion 35D.

The clip plate portion 194 is disposed laterally in the disk circumferential direction with respect to the dust collection portion 191H on the disk transfer side, specifically, on the disk transfer side. In this state, as shown in fig. 73, the clip plate portion 194 presses the disc-turning-side dust collection portion 191H against the outer peripheral frame portion 33D so as to be in surface contact with the inner flat surface 33i at the top surface portion 205 a. Thereby, the clip plate portion 194 restricts movement of the dust collection portion 191H positioned on the tray transfer side of the tray main body 29D by the positioning plate portion 193H in the tray circumferential direction by the inner flat surface 33 i.

The filter unit 55H is positioned as described above by the pair of dust collecting units 191H by the one positioning plate 193H, and the other clamping plate 194 is in surface contact with the surface 204Dc of the dust collecting unit 191H on the tray-out side at the base plate 221. As shown in fig. 71, the mounting portion 223 of the other clip plate portion 194 engages with the second engagement hole 184D of the inner pad support portion 32D, and the mounting portion 222 engages with the second engagement hole 174D (see fig. 50) of the outer pad support portion 36D.

The clip plate portion 194 is provided laterally in the disk circumferential direction with respect to the dust collection portion 191H on the disk ejection side, specifically, on the disk ejection side. In this state, as shown in fig. 73, the clip plate portion 194 presses the dust collection portion 191H on the tray-out side against the outer peripheral frame portion 34D so as to be in surface contact with the inner flat surface 34i at the top surface portion 205 a. Thus, the clip plate portion 194 and the inner flat surface 34i restrict movement of the dust collection portion 191H positioned on the tray ejection side of the tray main body 29D by the positioning plate portion 193H in the tray circumferential direction.

The extending portion 401H of the disc-in-side dust collection portion 191H and the extending portion 401H of the disc-out-side dust collection portion 191H are brought into contact with each other in the disc circumferential direction by the disc-in-side clip plate portion 194 and the disc-out-side clip plate portion 194, respectively, to be continuous. Thus, the filter unit 55H is provided continuously from the disk transfer side to the disk transfer side of the tray 21H, and the pair of dust collection units 191H is also provided continuously from the disk transfer side to the disk transfer side of the tray 21H. A pair of continuous extension portions 401H of the filter portion 55H are arranged at positions between the bridge portion 142 of the brake caliper 22 and the disk radial direction of the disk rotor 11.

As shown in fig. 72, in the bracket 21H configured by attaching the filter unit 55H to the bracket main body 29D, the inner curved surface portions 204Da, 401Ha of the pair of dust collecting portions 191D of the filter unit 55H and the inner curved surface portion 211Ha of the disk radial inner side of the curved plate portion 211H of the positioning plate portion 193H of the filter unit 55H configure the inner peripheral surface 21Hb. As shown in fig. 69, the inner peripheral surface 21Hb is formed along the outer peripheral edge of the disk radial direction outer side of the disk rotor 11.

The filter portion 55H located on the inner peripheral surface 21Hb is provided to face the outer peripheral edge of the disc rotor 11. In other words, the bracket 21H includes an inner peripheral surface 21Hb formed along the outer peripheral edge of the disc rotor 11, and a filter portion 55H located on the inner peripheral surface 21Hb and facing the outer peripheral edge of the disc rotor 11. The filter portion 55H is provided with dust collection portions 191H on both the disk transfer side and the disk transfer out side of the tray 21D.

When the vehicle is traveling forward, the disc brake 10H mainly captures brake dust generated during braking, by a dust collecting portion 191H of the filter portion 55H that is provided on the disc roll-out side, which is the front side in the rotational direction of the disc rotor 11 than the liner 92. In addition, during the vehicle traveling backward, the dust collection portion 191H of the filter portion 55H, which is provided further toward the front in the rotational direction of the disc rotor 11 than the liner 92, mainly captures brake dust.

Since the pair of dust collecting portions 191H of the filter portion 55H of the disc brake 10H of the third embodiment are provided continuously from the disc transfer side to the disc transfer side of the bracket 21H, brake dust can be collected more efficiently by the filter portion 55H.

First modification example

In the disc brake 10H according to the third embodiment, the positioning plate 193I shown in fig. 81 and 82 may be provided instead of the positioning plate 193H. The positioning plate 193I has a curved plate 211I partially different from the curved plate 211H. The curved plate portion 211I differs from the curved plate portion 211H in that a plurality of circular hole-like holes 251I penetrating the curved plate portion 211I in the plate thickness direction (radial direction) are formed in an orderly arrangement. Therefore, the curved plate portion 211I has an inner curved surface portion 211Ia, and the inner curved surface portion 211Ia differs from the inner curved surface portion 211Ha in that the plurality of holes 251I are opened. The curved plate portion 211I has an outer curved surface portion 211Ib, and the outer curved surface portion 211Ib differs from the outer curved surface portion 211Hb in that a plurality of holes 251I are opened. When such positioning plate 193I is used, air containing brake dust can be satisfactorily flowed into the pair of dust collecting parts 191H through the plurality of holes 251I, and therefore brake dust can be more efficiently collected by the pair of dust collecting parts 191H.

In the disc brake 10H according to the third embodiment, a clip plate 194A may be provided instead of the clip plate 194. If the clip plate 194A is used, air containing brake dust can be caused to flow well to the dust collection portion 191H via the plurality of holes 252A, and therefore brake dust can be recovered more efficiently by the dust collection portion 191D.

Second modification example

In the disc brake 10H according to the third embodiment, a positioning plate 193J shown in fig. 83 and 84 may be provided instead of the positioning plate 193H. The positioning plate portion 193J has a curved plate portion 211J which is partially different from the curved plate portion 211H. The curved plate portion 211J differs from the curved plate portion 211H in that a plurality of square hole-like holes 251J penetrating the curved plate portion 211J in the plate thickness direction (radial direction) are formed in an orderly arrangement. Therefore, the curved plate portion 211J has an inner curved surface portion 211Ja, and the inner curved surface portion 211Ja differs from the inner curved surface portion 211Ha in that a plurality of holes 251J are opened. The curved plate portion 211J has an outer curved surface portion 211Jb, and the outer curved surface portion 211Jb differs from the outer curved surface portion 211Hb in that a plurality of holes 251J are opened. When such positioning plate portion 193J is used, air containing brake dust can be satisfactorily flowed to the pair of dust collecting portions 191H through the plurality of holes 251J, and therefore brake dust can be more efficiently collected by the pair of dust collecting portions 191H.

In the disc brake 10H according to the third embodiment, the clip plate 194B may be provided instead of the clip plate 194. If the clip plate 194B is used, air containing brake dust can be caused to flow well to the dust collection portion 191H via the hole 252B, and therefore brake dust can be recovered more efficiently by the pair of dust collection portions 191H.

In the first to third embodiments described above, the dust collection units 191, 191D, 191H are mounted on the bracket bodies 29, 29D by the separate mounting plates 192, 192D, 192H, for example. Since the dust collection parts 191, 191D, 191H are elastic bodies, the following structure can be also employed: the dust collection parts 191, 191D, 191H are formed in a shape larger by one turn than the size of the attachment parts to the bracket main bodies 29, 29D, and are held by the bracket main bodies 29, 29D by reaction forces to return to the original shapes. This makes it possible to have a structure in which the mounting plates 192, 192D, 192H are not used.

The disc brake (for example, the disc brakes 10, 10D, 10H) according to the first aspect of the embodiment described above includes: friction pads (e.g., friction pads 24, 25) provided at a lateral position in the disk axial direction with respect to the disk rotor (e.g., disk rotor 11) and provided so as to be movable in the disk axial direction; brackets (e.g., brackets 21, 21D, 21H) having: an inner peripheral surface (e.g., inner peripheral surfaces 21b, 21Db, 21 Hb) that supports the friction pad and is formed along an outer peripheral edge of the disc rotor; and a filter unit (e.g., filter units 55, 56, 55D, 56D, 55H) provided on the inner peripheral surface and facing the outer peripheral edge of the disc rotor. Thus, brake dust can be efficiently recovered.

In the disc brake according to the second aspect, the filter unit is provided on the disc roll-out side of the bracket according to the first aspect.

In the disc brake according to the third aspect, according to the first aspect, the filter unit is configured by a dust collecting unit (for example, dust collecting units 191, 191D, 191H) and an attaching plate (for example, attaching plates 192, 192D, 192H) for attaching the dust collecting unit to a bracket main body (for example, bracket main bodies 29, 29D) of the bracket.

In the disc brake according to the fourth aspect, according to the third aspect, the mounting plate is provided with mounting portions (for example, mounting portions 212, 213, 222, 223, 412H to 415H) for mounting on the bracket main body.

A fifth aspect of the disc brake according to the fourth aspect is the disc brake according to the fourth aspect, wherein the mounting plate includes: a positioning plate (for example, positioning plate 193, 193A to 193J) that positions the dust collection unit and is difficult to detach from the bracket main body; a clip-type plate portion (e.g., clip-type plate portions 194, 194A, 194B) that supports the dust collection portion and is detachable with respect to the bracket body.

In a disc brake according to a sixth aspect, according to the fifth aspect, the positioning plate portion is provided in a direction of a disc center axis with respect to the dust collection portion.

In the disc brake according to the seventh aspect, according to the fifth aspect, the clip plate portion is provided on a side of the dust collection portion in the disc circumferential direction.

In the disc brake according to the eighth aspect, according to the third aspect, the mounting plate is provided with holes (for example, holes 251A, 251B, 251E, 251F, 251I, 251J).

A disc brake according to a ninth aspect is the disc brake according to the third aspect, wherein the dust collection portion is provided on both sides of the disc transfer side and the disc transfer side of the bracket.

In the disc brake according to a tenth aspect, according to the first aspect, the filter unit is made of an elastic body.

In the disc brake according to the eleventh aspect, according to the first aspect, holes (for example, holes 301D and 302D) are provided in the bracket at the positions of the filter portions.

A disc brake according to a twelfth aspect is the disc brake according to the first aspect, wherein the filter unit includes a first filter unit (for example, filter units 56 and 56D) and a second filter unit (for example, filter units 55 and 55D).

A thirteenth aspect of the disc brake is the disc brake according to the twelfth aspect, wherein the first filter unit is provided on a disc roll-out side of the bracket.

In the disc brake according to the fourteenth aspect, according to the first aspect, the filter unit (for example, the filter unit 55H) is provided continuously from the disc transfer side to the disc transfer side of the bracket.

The bracket (for example, brackets 21, 21D, 21H) of the fifteenth aspect includes: an inner peripheral surface (e.g., inner peripheral surfaces 21b, 21Db, 21 Hb) that supports friction pads (e.g., friction pads 24, 25) and is formed along an outer peripheral edge of a disc rotor (e.g., disc rotor 11); and a filter unit (e.g., filter units 55, 56, 55D, 56D, 55H) provided on the inner peripheral surface and facing the outer peripheral edge of the disc rotor. Thus, brake dust can be efficiently recovered.

The shapes of the respective members constituting the bracket, the dust collection portion, and the disc brake are not limited to the shapes described in the above embodiments.

Description of the reference numerals

10. 10D, 10H disc brake

11. Disc rotor

24. 25 friction pad

21. 21D, 21H bracket

21b, 21Db, 21Hb inner circumferential surface

29. 29D bracket main body

55. 56, 55D, 56D, 55H filter unit

191. 191D, 191H dust collecting part

192. 192D, 192H mounting plate

193. 193A-193J positioning plate

194. 194A, 194B clip type plate portion

212. 213, 222, 223, 412H-415H mounting portions

251A, 251B, 251E, 251F, 251I, 251J well

301D, 302D holes

Claims

1. A disc brake is characterized by comprising:

a friction pad provided at a lateral position in the disk axial direction with respect to the disk rotor, and provided so as to be movable in the disk axial direction;

A bracket, which has: an inner peripheral surface supporting the friction pad and formed along an outer peripheral edge of the disc rotor; and a filter unit located on the inner peripheral surface and facing the outer peripheral edge of the disc rotor.

2. A disc brake according to claim 1, wherein the filter portion is provided on a disc roll-out side of the carrier.

3. The disc brake of claim 1, wherein the filter part is composed of a dust collecting part and a mounting plate for mounting the dust collecting part on a bracket main body of the bracket.

4. A disc brake according to claim 3, wherein a mounting portion for mounting on the bracket main body is provided on the mounting plate.

5. The disc brake of claim 4, wherein the mounting plate includes:

a positioning plate portion that positions the dust collection portion and is difficult to detach from the bracket main body;

and a clip plate portion supporting the dust collection portion and detachable with respect to the bracket main body.

6. The disc brake of claim 5, wherein the positioning plate portion is disposed in a direction of a disc center axis with respect to the dust collection portion.

7. The disc brake of claim 5, wherein the clip-on plate portion is disposed laterally of the dust collection portion in the disc circumferential direction.

8. A disc brake according to claim 3, wherein holes are provided in the mounting plate.

9. A disc brake according to claim 3, wherein the dust collecting portion is provided on both of a disc-in side and a disc-out side of the bracket.

10. The disc brake of claim 1, wherein the filter portion is constructed of an elastomer.

11. A disc brake according to claim 1, wherein holes are provided in the carrier at the location of the filter portions.

12. The disc brake of claim 1, wherein the filter portion is comprised of a first filter portion and a second filter portion.

13. The disc brake of claim 12, wherein the first filter portion is disposed on a disc roll-out side of the carrier.

14. A disc brake according to claim 1, wherein the filter portion is provided continuously from a disc-in side to a disc-out side of the bracket.

15. A bracket, characterized by comprising: an inner peripheral surface supporting the friction pad and formed along an outer peripheral edge of the disc rotor; and a filter unit located on the inner peripheral surface and facing the outer peripheral edge of the disc rotor.